diff --git a/test/compilationTests/corion/ico.sol b/test/compilationTests/corion/ico.sol
index 804443958..7b27c2015 100644
--- a/test/compilationTests/corion/ico.sol
+++ b/test/compilationTests/corion/ico.sol
@@ -277,7 +277,7 @@ contract ico is safeMath {
     
     function () external payable {
         /*
-            Callback function. Simply calls the buy function as a beneficiary and there is no affilate address.
+            Callback function. Simply calls the buy function as a beneficiary and there is no affiliate address.
             If they call the contract without any function then this process will be taken place.
         */
         require( isICO() );
@@ -290,9 +290,9 @@ contract ico is safeMath {
             
             If there is not at least 0.2 ether balance on the beneficiaryAddress then the amount of the ether which was intended for the purchase will be reduced by 0.2 and that will be sent to the address of the beneficiary.
             From the remaining amount calculate the reward with the help of the getIcoReward function.
-            Only that affilate address is valid which has some token on it’s account.
-            If there is a valid affilate address then calculate and credit the reward as well in the following way:
-            With more than 1e12 token contract credit 5% reward based on the calculation that how many tokens did they buy when he was added as an affilate.
+            Only that affiliate address is valid which has some token on it’s account.
+            If there is a valid affiliate address then calculate and credit the reward as well in the following way:
+            With more than 1e12 token contract credit 5% reward based on the calculation that how many tokens did they buy when he was added as an affiliate.
                 More than 1e11 token: 4%
                 More than 1e10 token: 3%
                 More than 1e9 token: 2% below 1%
@@ -345,7 +345,7 @@ contract ico is safeMath {
         /*
             Crediting the premium token
         
-            @owner The corion token balance of this address will be set based on the calculation which shows that how many times can be the amount of the purchased tokens devided by 5000. So after each 5000 token we give 1 premium token.
+            @owner The corion token balance of this address will be set based on the calculation which shows that how many times can be the amount of the purchased tokens divided by 5000. So after each 5000 token we give 1 premium token.
         */
         uint256 _reward = (brought[owner].cor / 5e9) - brought[owner].corp;
         if ( _reward > 0 ) {
@@ -372,5 +372,5 @@ contract ico is safeMath {
         return startBlock <= block.number && block.number <= icoDelay && ( ! aborted ) && ( ! closed );
     }
     
-    event EICO(address indexed Address, uint256 indexed value, address Affilate, uint256 AffilateValue);
+    event EICO(address indexed Address, uint256 indexed value, address Affiliate, uint256 AffilateValue);
 }
diff --git a/test/compilationTests/corion/module.sol b/test/compilationTests/corion/module.sol
index 362283efc..62f44af77 100644
--- a/test/compilationTests/corion/module.sol
+++ b/test/compilationTests/corion/module.sol
@@ -131,7 +131,7 @@ contract module {
         /*
             Check self for ready for functions or not.
             
-            @success    Function call was successfull or not
+            @success    Function call was successful or not
             @active     Ready for functions or not
         */
         return (true, moduleStatus == status.Connected && block.number >= disabledUntil);
diff --git a/test/compilationTests/corion/moduleHandler.sol b/test/compilationTests/corion/moduleHandler.sol
index 441f7fba1..fddd2a292 100644
--- a/test/compilationTests/corion/moduleHandler.sol
+++ b/test/compilationTests/corion/moduleHandler.sol
@@ -63,7 +63,7 @@ contract moduleHandler is multiOwner, announcementTypes {
     function addModule(modules_s input, bool call) internal {
         /*
             Inside function for registration of the modules in the database.
-            If the call is false, wont happen any direct call.
+            If the call is false, won't happen any direct call.
             
             @input  _Structure of module.
             @call   Is connect to the module or not.
@@ -88,7 +88,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             @name       Name of module.
             @addr       Address of module.
             @found      Is there any result.
-            @success    Was the transaction succesfull or not.
+            @success    Was the transaction successful or not.
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByName(name);
         if ( _success && _found ) { return (true, true, modules[_id].addr); }
@@ -204,7 +204,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             Deleting module from the database. Can be called only by the Publisher contract.
             
             @name           Name of module to delete.
-            @bool           Was the function successfull?
+            @bool           Was the function successful?
             @callCallback   Call the replaceable module to confirm replacement or not.
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
@@ -245,7 +245,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             @from       from who.
             @to         to who.
             @value      amount.
-            @bool       Was the function successfull?
+            @bool       Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success && _found && modules[_id].name == keccak256('Token') );
@@ -264,7 +264,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             
             @roundID        Number of Schelling round.
             @reward         Coin emission in this Schelling round.
-            @bool           Was the function successfull?
+            @bool           Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success && _found && modules[_id].name == keccak256('Schelling') );
@@ -283,7 +283,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             Every module will be informed about the ModuleHandler replacement.
             
             @newHandler     Address of the new ModuleHandler.
-            @bool           Was the function successfull?
+            @bool           Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success );
@@ -304,7 +304,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             
             @owner     address
             @value      balance.
-            @success    was the function successfull?
+            @success    was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByName('Token');
         require( _success && _found );
@@ -315,7 +315,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             Query of the whole token amount.
             
             @value      amount.
-            @success    was the function successfull?
+            @success    was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByName('Token');
         require( _success && _found );
@@ -326,7 +326,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             Query of ICO state
             
             @ico        Is ICO in progress?.
-            @success    was the function successfull?
+            @success    was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByName('Token');
         require( _success && _found );
@@ -337,7 +337,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             Query of number of the actual Schelling round.
             
             @round      Schelling round.
-            @success    was the function successfull?
+            @success    was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByName('Schelling');
         require( _success && _found );
@@ -350,7 +350,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             @to         Place of new token
             @value      Token amount
             
-            @success    Was the function successfull?
+            @success    Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success && _found && modules[_id].name == keccak256('Provider') );
@@ -367,7 +367,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             @to         To who.
             @value      Token amount.
             @fee        Transaction fee will be charged or not?
-            @success    Was the function successfull?
+            @success    Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success && _found );
@@ -382,7 +382,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             
             @from       From who.
             @value      Token amount.
-            @success    Was the function successfull?
+            @success    Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success && _found && modules[_id].name == keccak256('Provider') );
@@ -397,7 +397,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             
             @from       From who.
             @value      Token amount.
-            @success    Was the function successfull?
+            @success    Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success && _found && modules[_id].name == keccak256('Schelling') );
@@ -413,7 +413,7 @@ contract moduleHandler is multiOwner, announcementTypes {
             @moduleName Module name which will be configured
             @aType      Type of variable (announcementType).
             @value      New value
-            @success    Was the function successfull?
+            @success    Was the function successful?
         */
         (bool _success, bool _found, uint256 _id) = getModuleIDByAddress(msg.sender);
         require( _success );
@@ -431,7 +431,7 @@ contract moduleHandler is multiOwner, announcementTypes {
     function freezing(bool forever) external {
         /*
             Freezing CORION Platform. Can be called only by the owner.
-            Freez can not be recalled!
+            Freeze can not be recalled!
             
             @forever    Is it forever or not?
         */
diff --git a/test/compilationTests/corion/premium.sol b/test/compilationTests/corion/premium.sol
index 14f18ad22..e1f12ed0f 100644
--- a/test/compilationTests/corion/premium.sol
+++ b/test/compilationTests/corion/premium.sol
@@ -118,7 +118,7 @@ contract premium is module, safeMath {
             @extraData      Extra data to be received by the receiver
             @nonce          Transaction count
             
-            @sucess         Was the Function successful?
+            @success         Was the Function successful?
         */
         _approve(spender, amount, nonce);
         require( thirdPartyPContractAbstract(spender).approvedCorionPremiumToken(msg.sender, amount, extraData) );
diff --git a/test/compilationTests/corion/provider.sol b/test/compilationTests/corion/provider.sol
index 83edcc01d..35ade69f0 100644
--- a/test/compilationTests/corion/provider.sol
+++ b/test/compilationTests/corion/provider.sol
@@ -18,7 +18,7 @@ contract provider is module, safeMath, announcementTypes {
     }
     function transferEvent(address from, address to, uint256 value) external returns (bool success) {
         /*
-            Transaction completed. This function is ony available for the modulehandler.
+            Transaction completed. This function is only available for the modulehandler.
             It should be checked if the sender or the acceptor does not connect to the provider or it is not a provider itself if so than the change should be recorded.
             
             @from       From whom?
@@ -35,7 +35,7 @@ contract provider is module, safeMath, announcementTypes {
         /*
             New schelling round. This function is only available for the moduleHandler.
             We are recording the new schelling round and we are storing the whole current quantity of the tokens.
-            We generate a reward quantity of tokens directed to the providers address. The collected interest will be tranfered from this contract.
+            We generate a reward quantity of tokens directed to the providers address. The collected interest will be transferred from this contract.
             
             @roundID        Number of the schelling round.
             @reward         token emission 
@@ -228,7 +228,7 @@ contract provider is module, safeMath, announcementTypes {
             @website        Provider’s website
             @country        Provider’s country
             @info           Provider’s short introduction.
-            @rate           Rate of the emission what is going to be transfered to the client by the provider.
+            @rate           Rate of the emission what is going to be transferred to the client by the provider.
             @isForRent      is for Rent or not?
             @admin          The admin’s address
         */
@@ -328,7 +328,7 @@ contract provider is module, safeMath, announcementTypes {
 
             @addr           Address of the provider
             @height         Height
-            @rate           The rate of the emission which will be transfered to the client.
+            @rate           The rate of the emission which will be transferred to the client.
             @isForRent      Rent or not.
             @clientsCount   Number of the clients.
             @priv           Private or not?
@@ -356,7 +356,7 @@ contract provider is module, safeMath, announcementTypes {
     }
     function closeProvider() isReady external {
         /*
-            Closing and inactivate the provider.
+            Closing and deactivating the provider.
             It is only possible to close that active provider which is owned by the sender itself after calling the whole share of the emission.
             Whom were connected to the provider those clients will have to disconnect after they’ve called their share of emission which was not called before.
         */
@@ -373,7 +373,7 @@ contract provider is module, safeMath, announcementTypes {
         /*
             Permition of the user to be able to connect to the provider.
             This can only be invited by the provider’s admin.
-            With this kind of call only 100 address can be permited. 
+            With this kind of call only 100 address can be permitted. 
             
             @addr       Array of the addresses for whom the connection is allowed.
         */
@@ -391,7 +391,7 @@ contract provider is module, safeMath, announcementTypes {
         /*
             Disable of the user not to be able to connect to the provider.
             It is can called only for the admin of the provider.
-            With this kind of call only 100 address can be permited. 
+            With this kind of call only 100 address can be permitted. 
             
             @addr      Array of the addresses for whom the connection is allowed.
         */
@@ -411,7 +411,7 @@ contract provider is module, safeMath, announcementTypes {
             Providers can not connect to other providers.
             If is a client at any provider, then it is not possible to connect to other provider one.
             It is only possible to connect to valid and active providers.
-            If is an active provider then the client can only connect, if address is permited at the provider (Whitelist).
+            If is an active provider then the client can only connect, if address is permitted at the provider (Whitelist).
             At private providers, the number of the client is restricted. If it reaches the limit no further clients are allowed to connect.
             This process has a transaction fee based on the senders whole token quantity.
             
@@ -487,12 +487,12 @@ contract provider is module, safeMath, announcementTypes {
         /*
             Polling the share from the token emission token emission for clients and for providers.
 
-            It is optionaly possible to give an address of a beneficiary for whom we can transfer the accumulated amount. In case we don’t enter any address then the amount will be transfered to the caller’s address.
+            It is optionally possible to give an address of a beneficiary for whom we can transfer the accumulated amount. In case we don’t enter any address then the amount will be transferred to the caller’s address.
             As the interest should be checked at each schelling round in order to get the share from that so to avoid the overflow of the gas the number of the check-rounds should be limited.
-            Opcionalisan megadhato az ellenorzes koreinek szama. It is possible to enter optionaly the number of the check-rounds.  If it is 0 then it is automatic.
+            Opcionalisan megadhato az ellenorzes koreinek szama. It is possible to enter optionally the number of the check-rounds.  If it is 0 then it is automatic.
             Provider variable should only be entered if the real owner of the provider is not the caller’s address.
             In case the client/provider was far behind then it is possible that this function should be called several times to check the total generated schelling rounds and to collect the share.
-            If is neighter a client nor a provider then the function is not available.
+            If is neither a client nor a provider then the function is not available.
             The tokens will be sent to the beneficiary from the address of the provider without any transaction fees.
             
             @beneficiary        Address of the beneficiary
@@ -784,7 +784,7 @@ contract provider is module, safeMath, announcementTypes {
         /*
             Inner function to check the ICO status.
             
-            @isICO      Is the ICO in proccess or not?
+            @isICO      Is the ICO in process or not?
         */
         (bool _success, bool _isICO) = moduleHandler(moduleHandlerAddress).isICO();
         require( _success );
diff --git a/test/compilationTests/corion/publisher.sol b/test/compilationTests/corion/publisher.sol
index 3a332706c..44bc59649 100644
--- a/test/compilationTests/corion/publisher.sol
+++ b/test/compilationTests/corion/publisher.sol
@@ -264,7 +264,7 @@ contract publisher is announcementTypes, module, safeMath {
     function checkICO() internal returns (bool isICO) {
         /*
             Inner function to check the ICO status.
-            @bool       Is the ICO in proccess or not?
+            @bool       Is the ICO in process or not?
         */
         (bool _success, bool _isICO) = moduleHandler(moduleHandlerAddress).isICO();
         require( _success );
diff --git a/test/compilationTests/corion/schelling.sol b/test/compilationTests/corion/schelling.sol
index 0f84239db..b8beaa3a2 100644
--- a/test/compilationTests/corion/schelling.sol
+++ b/test/compilationTests/corion/schelling.sol
@@ -147,7 +147,7 @@ contract schelling is module, announcementTypes, schellingVars {
             @from      From who
             @to        To who
             @value     Amount
-            @bool      Was the transaction succesfull?
+            @bool      Was the transaction successful?
         */
         require( super.isModuleHandler(msg.sender) );
         if ( to == address(this) ) {
@@ -442,14 +442,14 @@ contract schelling is module, announcementTypes, schellingVars {
         if ( ! round.voted ) {
             newRound.reward = round.reward;
         }
-        uint256 aboves;
+        uint256 above;
         for ( uint256 a=currentRound ; a>=currentRound-interestCheckRounds ; a-- ) {
             if (a == 0) { break; }
             prevRound = getRound(a);
-            if ( prevRound.totalAboveWeight > prevRound.totalBelowWeight ) { aboves++; }
+            if ( prevRound.totalAboveWeight > prevRound.totalBelowWeight ) { above++; }
         }
         uint256 expansion;
-        if ( aboves >= interestCheckAboves ) {
+        if ( above >= interestCheckAboves ) {
             expansion = getTotalSupply() * interestRate / interestRateM / 100;
         }
         
diff --git a/test/compilationTests/milestonetracker/MilestoneTracker.sol b/test/compilationTests/milestonetracker/MilestoneTracker.sol
index 545acb0a3..fc7008cd3 100644
--- a/test/compilationTests/milestonetracker/MilestoneTracker.sol
+++ b/test/compilationTests/milestonetracker/MilestoneTracker.sol
@@ -22,7 +22,7 @@ pragma solidity ^0.4.6;
 /// @dev This contract tracks the
 
 
-/// is rules the relation betwen a donor and a recipient
+/// is rules the relation between a donor and a recipient
 ///  in order to guaranty to the donor that the job will be done and to guaranty
 ///  to the recipient that he will be paid
 
diff --git a/test/compilationTests/zeppelin/Bounty.sol b/test/compilationTests/zeppelin/Bounty.sol
index 6341610ba..5b2124ca7 100644
--- a/test/compilationTests/zeppelin/Bounty.sol
+++ b/test/compilationTests/zeppelin/Bounty.sol
@@ -16,7 +16,7 @@ contract Bounty is PullPayment, Destructible {
   event TargetCreated(address createdAddress);
 
   /**
-   * @dev Fallback function allowing the contract to recieve funds, if they haven't already been claimed.
+   * @dev Fallback function allowing the contract to receive funds, if they haven't already been claimed.
    */
   function() external payable {
     if (claimed) {
diff --git a/test/compilationTests/zeppelin/ReentrancyGuard.sol b/test/compilationTests/zeppelin/ReentrancyGuard.sol
index ca8b643bc..60c7927b5 100644
--- a/test/compilationTests/zeppelin/ReentrancyGuard.sol
+++ b/test/compilationTests/zeppelin/ReentrancyGuard.sol
@@ -1,7 +1,7 @@
 pragma solidity ^0.4.11;
 
 /**
- * @title Helps contracts guard agains rentrancy attacks.
+ * @title Helps contracts guard against rentrancy attacks.
  * @author Remco Bloemen <remco@2π.com>
  * @notice If you mark a function `nonReentrant`, you should also
  * mark it `external`.
diff --git a/test/compilationTests/zeppelin/token/LimitedTransferToken.sol b/test/compilationTests/zeppelin/token/LimitedTransferToken.sol
index 5a056f786..052c28e6e 100644
--- a/test/compilationTests/zeppelin/token/LimitedTransferToken.sol
+++ b/test/compilationTests/zeppelin/token/LimitedTransferToken.sol
@@ -29,7 +29,7 @@ contract LimitedTransferToken is ERC20 {
 
   /**
    * @dev Checks modifier and allows transfer if tokens are not locked.
-   * @param _to The address that will recieve the tokens.
+   * @param _to The address that will receive the tokens.
    * @param _value The amount of tokens to be transferred.
    */
   function transfer(address _to, uint256 _value) canTransfer(msg.sender, _value) public {
@@ -39,7 +39,7 @@ contract LimitedTransferToken is ERC20 {
   /**
   * @dev Checks modifier and allows transfer if tokens are not locked.
   * @param _from The address that will send the tokens.
-  * @param _to The address that will recieve the tokens.
+  * @param _to The address that will receive the tokens.
   * @param _value The amount of tokens to be transferred.
   */
   function transferFrom(address _from, address _to, uint256 _value) public canTransfer(_from, _value) {
diff --git a/test/compilationTests/zeppelin/token/MintableToken.sol b/test/compilationTests/zeppelin/token/MintableToken.sol
index 4c4787e30..f99964d05 100644
--- a/test/compilationTests/zeppelin/token/MintableToken.sol
+++ b/test/compilationTests/zeppelin/token/MintableToken.sol
@@ -27,7 +27,7 @@ contract MintableToken is StandardToken, Ownable {
 
   /**
    * @dev Function to mint tokens
-   * @param _to The address that will recieve the minted tokens.
+   * @param _to The address that will receive the minted tokens.
    * @param _amount The amount of tokens to mint.
    * @return A boolean that indicates if the operation was successful.
    */
diff --git a/test/compilationTests/zeppelin/token/SimpleToken.sol b/test/compilationTests/zeppelin/token/SimpleToken.sol
index d0232bca1..6c3f5740e 100644
--- a/test/compilationTests/zeppelin/token/SimpleToken.sol
+++ b/test/compilationTests/zeppelin/token/SimpleToken.sol
@@ -18,7 +18,7 @@ contract SimpleToken is StandardToken {
   uint256 public INITIAL_SUPPLY = 10000;
 
   /**
-   * @dev Contructor that gives msg.sender all of existing tokens. 
+   * @dev Constructor that gives msg.sender all of existing tokens. 
    */
   constructor() public {
     totalSupply = INITIAL_SUPPLY;
diff --git a/test/compilationTests/zeppelin/token/StandardToken.sol b/test/compilationTests/zeppelin/token/StandardToken.sol
index a55d961cc..94b12e575 100644
--- a/test/compilationTests/zeppelin/token/StandardToken.sol
+++ b/test/compilationTests/zeppelin/token/StandardToken.sol
@@ -21,7 +21,7 @@ contract StandardToken is ERC20, BasicToken {
    * @dev Transfer tokens from one address to another
    * @param _from address The address which you want to send tokens from
    * @param _to address The address which you want to transfer to
-   * @param _value uint256 the amout of tokens to be transfered
+   * @param _value uint256 the amount of tokens to be transferred
    */
   function transferFrom(address _from, address _to, uint256 _value) public {
     uint256 _allowance = allowed[_from][msg.sender];
@@ -56,7 +56,7 @@ contract StandardToken is ERC20, BasicToken {
    * @dev Function to check the amount of tokens that an owner allowed to a spender.
    * @param _owner address The address which owns the funds.
    * @param _spender address The address which will spend the funds.
-   * @return A uint256 specifing the amount of tokens still avaible for the spender.
+   * @return A uint256 specifying the amount of tokens still available for the spender.
    */
   function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
     return allowed[_owner][_spender];
diff --git a/test/compilationTests/zeppelin/token/VestedToken.sol b/test/compilationTests/zeppelin/token/VestedToken.sol
index 17141bdfc..893a51db7 100644
--- a/test/compilationTests/zeppelin/token/VestedToken.sol
+++ b/test/compilationTests/zeppelin/token/VestedToken.sol
@@ -69,7 +69,7 @@ contract VestedToken is StandardToken, LimitedTransferToken {
   }
 
   /**
-   * @dev Revoke the grant of tokens of a specifed address.
+   * @dev Revoke the grant of tokens of a specified address.
    * @param _holder The address which will have its tokens revoked.
    * @param _grantId The id of the token grant.
    */
@@ -135,13 +135,13 @@ contract VestedToken is StandardToken, LimitedTransferToken {
   }
 
   /**
-   * @dev Calculate amount of vested tokens at a specifc time.
-   * @param tokens uint256 The amount of tokens grantted.
+   * @dev Calculate amount of vested tokens at a specific time.
+   * @param tokens uint256 The amount of tokens granted.
    * @param time uint64 The time to be checked
-   * @param start uint64 A time representing the begining of the grant
+   * @param start uint64 A time representing the beginning of the grant
    * @param cliff uint64 The cliff period.
    * @param vesting uint64 The vesting period.
-   * @return An uint256 representing the amount of vested tokensof a specif grant.
+   * @return An uint256 representing the amount of vested tokens of a specific grant.
    *  transferableTokens
    *   |                         _/--------   vestedTokens rect
    *   |                       _/
@@ -186,7 +186,7 @@ contract VestedToken is StandardToken, LimitedTransferToken {
   }
 
   /**
-   * @dev Get all information about a specifc grant.
+   * @dev Get all information about a specific grant.
    * @param _holder The address which will have its tokens revoked.
    * @param _grantId The id of the token grant.
    * @return Returns all the values that represent a TokenGrant(address, value, start, cliff,
@@ -226,7 +226,7 @@ contract VestedToken is StandardToken, LimitedTransferToken {
    * @dev Calculate the amount of non vested tokens at a specific time.
    * @param grant TokenGrant The grant to be checked.
    * @param time uint64 The time to be checked
-   * @return An uint256 representing the amount of non vested tokens of a specifc grant on the 
+   * @return An uint256 representing the amount of non vested tokens of a specific grant on the 
    * passed time frame.
    */
   function nonVestedTokens(TokenGrant grant, uint64 time) private view returns (uint256) {
diff --git a/test/contracts/Wallet.cpp b/test/contracts/Wallet.cpp
index fb104300f..b3a096a35 100644
--- a/test/contracts/Wallet.cpp
+++ b/test/contracts/Wallet.cpp
@@ -385,7 +385,7 @@ contract Wallet is multisig, multiowned, daylimit {
 			emit Deposit(msg.sender, msg.value);
 	}
 
-	// Outside-visible transact entry point. Executes transacion immediately if below daily spend limit.
+	// Outside-visible transact entry point. Executes transaction immediately if below daily spend limit.
 	// If not, goes into multisig process. We provide a hash on return to allow the sender to provide
 	// shortcuts for the other confirmations (allowing them to avoid replicating the _to, _value
 	// and _data arguments). They still get the option of using them if they want, anyways.
diff --git a/test/libsolidity/SolidityABIJSON.cpp b/test/libsolidity/SolidityABIJSON.cpp
index c366e8668..736b0b33f 100644
--- a/test/libsolidity/SolidityABIJSON.cpp
+++ b/test/libsolidity/SolidityABIJSON.cpp
@@ -199,7 +199,7 @@ BOOST_AUTO_TEST_CASE(multiple_params)
 
 BOOST_AUTO_TEST_CASE(multiple_methods_order)
 {
-	// methods are expected to be in alpabetical order
+	// methods are expected to be in alphabetical order
 	char const* sourceCode = R"(
 		contract test {
 			function f(uint a) public returns (uint d) { return a * 7; }
diff --git a/test/libsolidity/SolidityEndToEndTest.cpp b/test/libsolidity/SolidityEndToEndTest.cpp
index 822b81929..c6c11df56 100644
--- a/test/libsolidity/SolidityEndToEndTest.cpp
+++ b/test/libsolidity/SolidityEndToEndTest.cpp
@@ -6387,9 +6387,9 @@ BOOST_AUTO_TEST_CASE(return_multiple_strings_of_various_sizes)
 		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
 		"ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ"
 	);
-	vector<size_t> lengthes{0, 30, 32, 63, 64, 65, 210, 300};
-	for (auto l1: lengthes)
-		for (auto l2: lengthes)
+	vector<size_t> lengths{0, 30, 32, 63, 64, 65, 210, 300};
+	for (auto l1: lengths)
+		for (auto l2: lengths)
 		{
 			bytes dyn1 = encodeArgs(u256(l1), s1.substr(0, l1));
 			bytes dyn2 = encodeArgs(u256(l2), s2.substr(0, l2));
@@ -6456,9 +6456,9 @@ BOOST_AUTO_TEST_CASE(bytes_in_function_calls)
 	compileAndRun(sourceCode, 0, "Main");
 	string s1("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
 	string s2("ABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZABCDEFGHIJKLMNOPQRSTUVXYZ");
-	vector<size_t> lengthes{0, 31, 64, 65};
-	for (auto l1: lengthes)
-		for (auto l2: lengthes)
+	vector<size_t> lengths{0, 31, 64, 65};
+	for (auto l1: lengths)
+		for (auto l2: lengths)
 		{
 			bytes dyn1 = encodeArgs(u256(l1), s1.substr(0, l1));
 			bytes dyn2 = encodeArgs(u256(l2), s2.substr(0, l2));
@@ -6497,8 +6497,8 @@ BOOST_AUTO_TEST_CASE(return_bytes_internal)
 	)";
 	compileAndRun(sourceCode, 0, "Main");
 	string s1("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
-	vector<size_t> lengthes{0, 31, 64, 65};
-	for (auto l1: lengthes)
+	vector<size_t> lengths{0, 31, 64, 65};
+	for (auto l1: lengths)
 	{
 		bytes dyn1 = encodeArgs(u256(l1), s1.substr(0, l1));
 		bytes args1 = encodeArgs(u256(0x20)) + dyn1;
diff --git a/test/libsolidity/SolidityExpressionCompiler.cpp b/test/libsolidity/SolidityExpressionCompiler.cpp
index 949045eac..26b7914fc 100644
--- a/test/libsolidity/SolidityExpressionCompiler.cpp
+++ b/test/libsolidity/SolidityExpressionCompiler.cpp
@@ -77,7 +77,7 @@ Declaration const& resolveDeclaration(
 )
 {
 	ASTNode const* scope = &_sourceUnit;
-	// bracers are required, cause msvc couldnt handle this macro in for statement
+	// bracers are required, cause msvc couldn't handle this macro in for statement
 	for (string const& namePart: _namespacedName)
 	{
 		auto declarations = _resolver.resolveName(namePart, scope);
@@ -319,7 +319,7 @@ BOOST_AUTO_TEST_CASE(short_circuiting)
 	BOOST_CHECK_EQUAL_COLLECTIONS(code.begin(), code.end(), expectation.begin(), expectation.end());
 }
 
-BOOST_AUTO_TEST_CASE(arithmetics)
+BOOST_AUTO_TEST_CASE(arithmetic)
 {
 	char const* sourceCode = R"(
 		contract test {
diff --git a/test/libsolidity/SolidityOptimizer.cpp b/test/libsolidity/SolidityOptimizer.cpp
index d375beff2..a144068d9 100644
--- a/test/libsolidity/SolidityOptimizer.cpp
+++ b/test/libsolidity/SolidityOptimizer.cpp
@@ -104,7 +104,7 @@ public:
 							"\nOptimized:     " + toHex(optimizedOutput));
 	}
 
-	/// @returns the number of intructions in the given bytecode, not taking the metadata hash
+	/// @returns the number of instructions in the given bytecode, not taking the metadata hash
 	/// into account.
 	size_t numInstructions(bytes const& _bytecode, boost::optional<Instruction> _which = boost::optional<Instruction>{})
 	{
diff --git a/test/libsolidity/ViewPureChecker.cpp b/test/libsolidity/ViewPureChecker.cpp
index bb5480b2a..299cd0849 100644
--- a/test/libsolidity/ViewPureChecker.cpp
+++ b/test/libsolidity/ViewPureChecker.cpp
@@ -55,7 +55,7 @@ BOOST_AUTO_TEST_CASE(environment_access)
 		"this",
 		"address(1).balance"
 	};
-	// ``block.blockhash`` and ``blockhash`` are tested seperately below because their usage will
+	// ``block.blockhash`` and ``blockhash`` are tested separately below because their usage will
 	// produce warnings that can't be handled in a generic way.
 	vector<string> pure{
 		"msg.data",
diff --git a/test/libsolidity/syntaxTests/nameAndTypeResolution/412_early_exit_on_fatal_errors.sol b/test/libsolidity/syntaxTests/nameAndTypeResolution/412_early_exit_on_fatal_errors.sol
index 8e5d81e23..56fc40518 100644
--- a/test/libsolidity/syntaxTests/nameAndTypeResolution/412_early_exit_on_fatal_errors.sol
+++ b/test/libsolidity/syntaxTests/nameAndTypeResolution/412_early_exit_on_fatal_errors.sol
@@ -1,4 +1,4 @@
-// This tests a crash that occured because we did not stop for fatal errors.
+// This tests a crash that occurred because we did not stop for fatal errors.
 contract C {
     struct S {
         ftring a;
@@ -8,4 +8,4 @@ contract C {
     }
 }
 // ----
-// DeclarationError: (113-119): Identifier not found or not unique.
+// DeclarationError: (114-120): Identifier not found or not unique.