diff --git a/app/scripts/controllers/transactions/index.js b/app/scripts/controllers/transactions/index.js
index b064a81254bc..197ae5bae88c 100644
--- a/app/scripts/controllers/transactions/index.js
+++ b/app/scripts/controllers/transactions/index.js
@@ -1456,17 +1456,23 @@ export default class TransactionController extends EventEmitter {
       if (error.message.toLowerCase().includes('known transaction')) {
         txHash = keccak(toBuffer(addHexPrefix(rawTx), 'hex')).toString('hex');
         txHash = addHexPrefix(txHash);
-      } else if (error.message.includes("[ethjs-query] while formatting outputs from RPC")) {
+      } else if (
+        error.message.includes(
+          '[ethjs-query] while formatting outputs from RPC',
+        )
+      ) {
         // fix for ganache and hardhat users
         // error ends up wrapped in a string & inside .value because of
         // https://github.com/ethjs/ethjs-rpc/blob/master/src/index.js#L52
         // https://github.com/ethjs/ethjs-query/blob/master/src/index.js#L78
         let unwrapped;
         try {
-          let errorJson = error.message.substring(
-            error.message.indexOf("{"),
-            error.message.indexOf(',"code"')
-          ) + '}}}';
+          let errorJson = error.message
+            .substring(
+              error.message.indexOf('{'),
+              error.message.indexOf(',"code"'),
+            )
+            .concat('}}}');
           errorJson = JSON.parse(errorJson);
           unwrapped = new Error(errorJson.value.data.message);
           unwrapped.code = errorJson.value.code;