diff --git a/app/scripts/controllers/transactions/lib/util.js b/app/scripts/controllers/transactions/lib/util.js
index f403b0758..5d5e63c59 100644
--- a/app/scripts/controllers/transactions/lib/util.js
+++ b/app/scripts/controllers/transactions/lib/util.js
@@ -7,7 +7,7 @@ module.exports = {
   normalizeTxParams,
   validateTxParams,
   validateFrom,
-  validateRecipient
+  validateRecipient,
 }
 
 
@@ -48,19 +48,19 @@ function validateTxParams (txParams) {
 }
 
 function validateFrom (txParams) {
-  if ( !(typeof txParams.from === 'string') ) throw new Error(`Invalid from address ${txParams.from} not a string`)
+  if (!(typeof txParams.from === 'string')) throw new Error(`Invalid from address ${txParams.from} not a string`)
   if (!isValidAddress(txParams.from)) throw new Error('Invalid from address')
 }
 
 function validateRecipient (txParams) {
-  if (txParams.to === '0x' || txParams.to === null ) {
+  if (txParams.to === '0x' || txParams.to === null) {
     if (txParams.data) {
       delete txParams.to
     } else {
       throw new Error('Invalid recipient address')
     }
-  } else if ( txParams.to !== undefined && !isValidAddress(txParams.to) ) {
+  } else if (txParams.to !== undefined && !isValidAddress(txParams.to)) {
     throw new Error('Invalid recipient address')
   }
   return txParams
-}
\ No newline at end of file
+}
diff --git a/app/scripts/controllers/transactions/tx-gas-utils.js b/app/scripts/controllers/transactions/tx-gas-utils.js
index f40542603..1a7ff5b54 100644
--- a/app/scripts/controllers/transactions/tx-gas-utils.js
+++ b/app/scripts/controllers/transactions/tx-gas-utils.js
@@ -100,4 +100,4 @@ module.exports = class TxGasUtil {
     // otherwise use blockGasLimit
     return bnToHex(upperGasLimitBn)
   }
-}
\ No newline at end of file
+}
diff --git a/app/scripts/controllers/transactions/tx-state-manager.js b/app/scripts/controllers/transactions/tx-state-manager.js
index cb24b8c99..f898cc44a 100644
--- a/app/scripts/controllers/transactions/tx-state-manager.js
+++ b/app/scripts/controllers/transactions/tx-state-manager.js
@@ -92,7 +92,7 @@ module.exports = class TransactionStateManager extends EventEmitter {
     // or rejected tx's.
     // not tx's that are pending or unapproved
     if (txCount > txHistoryLimit - 1) {
-      let index = transactions.findIndex((metaTx) => {
+      const index = transactions.findIndex((metaTx) => {
         return this.getFinalStates().includes(metaTx.status)
       })
       if (index !== -1) {
@@ -145,7 +145,7 @@ module.exports = class TransactionStateManager extends EventEmitter {
   }
 
   // validates txParams members by type
-  validateTxParams(txParams) {
+  validateTxParams (txParams) {
     Object.keys(txParams).forEach((key) => {
       const value = txParams[key]
       // validate types
@@ -263,10 +263,10 @@ module.exports = class TransactionStateManager extends EventEmitter {
   // returns an array of states that can be considered final
   getFinalStates () {
     return [
-      'rejected',  // the user has responded no!
-      'confirmed',  // the tx has been included in a block.
-      'failed',  // the tx failed for some reason, included on tx data.
-      'dropped',  // the tx nonce was already used
+      'rejected', // the user has responded no!
+      'confirmed', // the tx has been included in a block.
+      'failed', // the tx failed for some reason, included on tx data.
+      'dropped', // the tx nonce was already used
     ]
   }