diff --git a/components/forms/CreateTxForm/MsgForm/MsgExecuteContractForm.tsx b/components/forms/CreateTxForm/MsgForm/MsgExecuteContractForm.tsx
index 6c6e59c..f3fddb8 100644
--- a/components/forms/CreateTxForm/MsgForm/MsgExecuteContractForm.tsx
+++ b/components/forms/CreateTxForm/MsgForm/MsgExecuteContractForm.tsx
@@ -99,10 +99,19 @@ const MsgExecuteContractForm = ({
       }
     })();
 
+    const msgContentUtf8Array = (() => {
+      try {
+        // The JsonEditor does not escape \n or remove whitespaces, so we need to parse + stringify
+        return toUtf8(JSON.stringify(JSON.parse(msgContent)));
+      } catch {
+        return Uint8Array.from([]);
+      }
+    })();
+
     const msgValue = MsgCodecs[MsgTypeUrls.Execute].fromPartial({
       sender: fromAddress,
       contract: contractAddress,
-      msg: toUtf8(msgContent),
+      msg: msgContentUtf8Array,
       funds: [{ denom, amount: amountInAtomics }],
     });
 
diff --git a/components/forms/CreateTxForm/MsgForm/MsgInstantiateContract2Form.tsx b/components/forms/CreateTxForm/MsgForm/MsgInstantiateContract2Form.tsx
index b95d28e..ed9d02c 100644
--- a/components/forms/CreateTxForm/MsgForm/MsgInstantiateContract2Form.tsx
+++ b/components/forms/CreateTxForm/MsgForm/MsgInstantiateContract2Form.tsx
@@ -110,6 +110,15 @@ const MsgInstantiateContract2Form = ({
       }
     })();
 
+    const msgContentUtf8Array = (() => {
+      try {
+        // The JsonEditor does not escape \n or remove whitespaces, so we need to parse + stringify
+        return toUtf8(JSON.stringify(JSON.parse(msgContent)));
+      } catch {
+        return Uint8Array.from([]);
+      }
+    })();
+
     const msgValue = MsgCodecs[MsgTypeUrls.Instantiate2].fromPartial({
       sender: fromAddress,
       codeId: codeId || 1,
@@ -117,7 +126,7 @@ const MsgInstantiateContract2Form = ({
       admin: adminAddress,
       fixMsg,
       salt: toUtf8(salt),
-      msg: toUtf8(msgContent),
+      msg: msgContentUtf8Array,
       funds: [{ denom, amount: amountInAtomics }],
     });
 
diff --git a/components/forms/CreateTxForm/MsgForm/MsgInstantiateContractForm.tsx b/components/forms/CreateTxForm/MsgForm/MsgInstantiateContractForm.tsx
index 5cb44ab..9b21e04 100644
--- a/components/forms/CreateTxForm/MsgForm/MsgInstantiateContractForm.tsx
+++ b/components/forms/CreateTxForm/MsgForm/MsgInstantiateContractForm.tsx
@@ -108,12 +108,21 @@ const MsgInstantiateContractForm = ({
       }
     })();
 
+    const msgContentUtf8Array = (() => {
+      try {
+        // The JsonEditor does not escape \n or remove whitespaces, so we need to parse + stringify
+        return toUtf8(JSON.stringify(JSON.parse(msgContent)));
+      } catch {
+        return Uint8Array.from([]);
+      }
+    })();
+
     const msgValue = MsgCodecs[MsgTypeUrls.Instantiate].fromPartial({
       sender: fromAddress,
       codeId: codeId || 1,
       label,
       admin: adminAddress,
-      msg: toUtf8(msgContent),
+      msg: msgContentUtf8Array,
       funds: [{ denom, amount: amountInAtomics }],
     });
 
diff --git a/components/forms/CreateTxForm/MsgForm/MsgMigrateContractForm.tsx b/components/forms/CreateTxForm/MsgForm/MsgMigrateContractForm.tsx
index 09f6dc6..647db1d 100644
--- a/components/forms/CreateTxForm/MsgForm/MsgMigrateContractForm.tsx
+++ b/components/forms/CreateTxForm/MsgForm/MsgMigrateContractForm.tsx
@@ -50,11 +50,20 @@ const MsgMigrateContractForm = ({
       return true;
     };
 
+    const msgContentUtf8Array = (() => {
+      try {
+        // The JsonEditor does not escape \n or remove whitespaces, so we need to parse + stringify
+        return toUtf8(JSON.stringify(JSON.parse(msgContent)));
+      } catch {
+        return Uint8Array.from([]);
+      }
+    })();
+
     const msgValue = MsgCodecs[MsgTypeUrls.Migrate].fromPartial({
       sender: fromAddress,
       contract: contractAddress,
       codeId: codeId || 1,
-      msg: toUtf8(msgContent),
+      msg: msgContentUtf8Array,
     });
 
     const msg: MsgMigrateContractEncodeObject = { typeUrl: MsgTypeUrls.Migrate, value: msgValue };