diff --git a/app/scripts/lib/account-tracker.js b/app/scripts/lib/account-tracker.js
index 07fc32b10..cdc21282d 100644
--- a/app/scripts/lib/account-tracker.js
+++ b/app/scripts/lib/account-tracker.js
@@ -11,7 +11,6 @@ const async = require('async')
 const EthQuery = require('eth-query')
 const ObservableStore = require('obs-store')
 const EventEmitter = require('events').EventEmitter
-const ethUtil = require('ethereumjs-util')
 function noop () {}
 
 
@@ -58,9 +57,8 @@ class AccountTracker extends EventEmitter {
   //
 
   _updateForBlock (block) {
-    const blockNumber = '0x' + block.number.toString('hex')
-    this._currentBlockNumber = blockNumber
-    const currentBlockGasLimit = ethUtil.addHexPrefix(block.gasLimit.toString())
+    this._currentBlockNumber = block.number
+    const currentBlockGasLimit = block.gasLimit
 
     this.store.updateState({ currentBlockGasLimit })
 
diff --git a/app/scripts/lib/pending-tx-tracker.js b/app/scripts/lib/pending-tx-tracker.js
index b07a6bd39..b97cec9ce 100644
--- a/app/scripts/lib/pending-tx-tracker.js
+++ b/app/scripts/lib/pending-tx-tracker.js
@@ -53,7 +53,7 @@ module.exports = class PendingTransactionTracker extends EventEmitter {
     })
   }
 
-  queryPendingTxs ({oldBlock, newBlock}) {
+  queryPendingTxs ({ oldBlock, newBlock }) {
     // check pending transactions on start
     if (!oldBlock) {
       this._checkPendingTxs()
diff --git a/test/unit/pending-tx-test.js b/test/unit/pending-tx-test.js
index 2865a30e6..1af464656 100644
--- a/test/unit/pending-tx-test.js
+++ b/test/unit/pending-tx-test.js
@@ -84,14 +84,14 @@ describe('PendingTransactionTracker', function () {
       let newBlock, oldBlock
       newBlock = { number: '0x01' }
       pendingTxTracker._checkPendingTxs = done
-      pendingTxTracker.queryPendingTxs({oldBlock, newBlock})
+      pendingTxTracker.queryPendingTxs({ oldBlock, newBlock })
     })
     it('should call #_checkPendingTxs if oldBlock and the newBlock have a diff of greater then 1', function (done) {
       let newBlock, oldBlock
       oldBlock = { number: '0x01' }
       newBlock = { number: '0x03' }
       pendingTxTracker._checkPendingTxs = done
-      pendingTxTracker.queryPendingTxs({oldBlock, newBlock})
+      pendingTxTracker.queryPendingTxs({ oldBlock, newBlock })
     })
     it('should not call #_checkPendingTxs if oldBlock and the newBlock have a diff of 1 or less', function (done) {
       let newBlock, oldBlock
@@ -101,7 +101,7 @@ describe('PendingTransactionTracker', function () {
         const err = new Error('should not call #_checkPendingTxs if oldBlock and the newBlock have a diff of 1 or less')
         done(err)
       }
-      pendingTxTracker.queryPendingTxs({oldBlock, newBlock})
+      pendingTxTracker.queryPendingTxs({ oldBlock, newBlock })
       done()
     })
   })