diff --git a/docs/sdk/core/examples/app4_test.go b/docs/sdk/core/examples/app4_test.go
index 2983118431..7d95d7b57d 100644
--- a/docs/sdk/core/examples/app4_test.go
+++ b/docs/sdk/core/examples/app4_test.go
@@ -73,7 +73,7 @@ func TestBadMsg(t *testing.T) {
 	if err != nil {
 		panic(err)
 	}
-	sigs := []auth.StdSignature{auth.StdSignature{
+	sigs := []auth.StdSignature{{
 		PubKey:        priv1.PubKey(),
 		Signature:     sig,
 		AccountNumber: 0,
@@ -119,7 +119,7 @@ func TestMsgSend(t *testing.T) {
 	if err != nil {
 		panic(err)
 	}
-	sigs := []auth.StdSignature{auth.StdSignature{
+	sigs := []auth.StdSignature{{
 		PubKey:        priv1.PubKey(),
 		Signature:     sig,
 		AccountNumber: 0,
diff --git a/types/coin_test.go b/types/coin_test.go
index 0d47630f40..145c0c40a2 100644
--- a/types/coin_test.go
+++ b/types/coin_test.go
@@ -153,10 +153,10 @@ func TestIsZeroCoins(t *testing.T) {
 		expected bool
 	}{
 		{Coins{}, true},
-		{Coins{NewCoin("A", 0)}, true},
-		{Coins{NewCoin("A", 0), NewCoin("B", 0)}, true},
-		{Coins{NewCoin("A", 1)}, false},
-		{Coins{NewCoin("A", 0), NewCoin("B", 1)}, false},
+		{Coins{NewInt64Coin("A", 0)}, true},
+		{Coins{NewInt64Coin("A", 0), NewInt64Coin("B", 0)}, true},
+		{Coins{NewInt64Coin("A", 1)}, false},
+		{Coins{NewInt64Coin("A", 0), NewInt64Coin("B", 1)}, false},
 	}
 
 	for _, tc := range cases {
@@ -172,13 +172,13 @@ func TestEqualCoins(t *testing.T) {
 		expected bool
 	}{
 		{Coins{}, Coins{}, true},
-		{Coins{NewCoin("A", 0)}, Coins{NewCoin("A", 0)}, true},
-		{Coins{NewCoin("A", 0), NewCoin("B", 1)}, Coins{NewCoin("A", 0), NewCoin("B", 1)}, true},
-		{Coins{NewCoin("A", 0)}, Coins{NewCoin("B", 0)}, false},
-		{Coins{NewCoin("A", 0)}, Coins{NewCoin("A", 1)}, false},
-		{Coins{NewCoin("A", 0)}, Coins{NewCoin("A", 0), NewCoin("B", 1)}, false},
+		{Coins{NewInt64Coin("A", 0)}, Coins{NewInt64Coin("A", 0)}, true},
+		{Coins{NewInt64Coin("A", 0), NewInt64Coin("B", 1)}, Coins{NewInt64Coin("A", 0), NewInt64Coin("B", 1)}, true},
+		{Coins{NewInt64Coin("A", 0)}, Coins{NewInt64Coin("B", 0)}, false},
+		{Coins{NewInt64Coin("A", 0)}, Coins{NewInt64Coin("A", 1)}, false},
+		{Coins{NewInt64Coin("A", 0)}, Coins{NewInt64Coin("A", 0), NewInt64Coin("B", 1)}, false},
 		// TODO: is it expected behaviour? shouldn't we sort the coins before comparing them?
-		{Coins{NewCoin("A", 0), NewCoin("B", 1)}, Coins{NewCoin("B", 1), NewCoin("A", 0)}, false},
+		{Coins{NewInt64Coin("A", 0), NewInt64Coin("B", 1)}, Coins{NewInt64Coin("B", 1), NewInt64Coin("A", 0)}, false},
 	}
 
 	for tcnum, tc := range cases {
diff --git a/types/context_test.go b/types/context_test.go
index 900192285a..b11a774cd9 100644
--- a/types/context_test.go
+++ b/types/context_test.go
@@ -160,7 +160,7 @@ func TestContextWithCustom(t *testing.T) {
 	ischeck := true
 	txbytes := []byte("txbytes")
 	logger := NewMockLogger()
-	signvals := []abci.SigningValidator{abci.SigningValidator{}}
+	signvals := []abci.SigningValidator{{}}
 	meter := types.NewGasMeter(10000)
 
 	ctx = types.NewContext(nil, header, ischeck, logger).
diff --git a/x/bank/app_test.go b/x/bank/app_test.go
index 0822a26b7e..c8d0a417dc 100644
--- a/x/bank/app_test.go
+++ b/x/bank/app_test.go
@@ -113,8 +113,8 @@ func TestMsgSendWithAccounts(t *testing.T) {
 			expPass:  true,
 			privKeys: []crypto.PrivKey{priv1},
 			expectedBalances: []expectedBalance{
-				expectedBalance{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 57)}},
-				expectedBalance{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 10)}},
+				{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 57)}},
+				{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 10)}},
 			},
 		},
 		{
@@ -169,9 +169,9 @@ func TestMsgSendMultipleOut(t *testing.T) {
 			expPass:  true,
 			privKeys: []crypto.PrivKey{priv1},
 			expectedBalances: []expectedBalance{
-				expectedBalance{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
-				expectedBalance{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 47)}},
-				expectedBalance{addr3, sdk.Coins{sdk.NewInt64Coin("foocoin", 5)}},
+				{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
+				{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 47)}},
+				{addr3, sdk.Coins{sdk.NewInt64Coin("foocoin", 5)}},
 			},
 		},
 	}
@@ -211,10 +211,10 @@ func TestSengMsgMultipleInOut(t *testing.T) {
 			expPass:  true,
 			privKeys: []crypto.PrivKey{priv1, priv4},
 			expectedBalances: []expectedBalance{
-				expectedBalance{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
-				expectedBalance{addr4, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
-				expectedBalance{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 52)}},
-				expectedBalance{addr3, sdk.Coins{sdk.NewInt64Coin("foocoin", 10)}},
+				{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
+				{addr4, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
+				{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 52)}},
+				{addr3, sdk.Coins{sdk.NewInt64Coin("foocoin", 10)}},
 			},
 		},
 	}
@@ -246,8 +246,8 @@ func TestMsgSendDependent(t *testing.T) {
 			expPass:  true,
 			privKeys: []crypto.PrivKey{priv1},
 			expectedBalances: []expectedBalance{
-				expectedBalance{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
-				expectedBalance{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 10)}},
+				{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 32)}},
+				{addr2, sdk.Coins{sdk.NewInt64Coin("foocoin", 10)}},
 			},
 		},
 		{
@@ -257,7 +257,7 @@ func TestMsgSendDependent(t *testing.T) {
 			expPass:  true,
 			privKeys: []crypto.PrivKey{priv2},
 			expectedBalances: []expectedBalance{
-				expectedBalance{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 42)}},
+				{addr1, sdk.Coins{sdk.NewInt64Coin("foocoin", 42)}},
 			},
 		},
 	}