diff --git a/test/unit/app/controllers/metamask-controller-test.js b/test/unit/app/controllers/metamask-controller-test.js
index 4bc16e65e..101fdfdc1 100644
--- a/test/unit/app/controllers/metamask-controller-test.js
+++ b/test/unit/app/controllers/metamask-controller-test.js
@@ -1,3 +1,5 @@
+global.fetch = global.fetch || require('isomorphic-fetch')
+
 const assert = require('assert')
 const sinon = require('sinon')
 const clone = require('clone')
@@ -479,7 +481,7 @@ describe('MetaMaskController', function () {
     it('errors when signing a message', async function () {
       await metamaskController.signPersonalMessage(personalMessages[0].msgParams)
       assert.equal(metamaskPersonalMsgs[msgId].status, 'signed')
-      assert.equal(metamaskPersonalMsgs[msgId].rawSig, '0x6a1b65e2b8ed53cf398a769fad24738f9fbe29841fe6854e226953542c4b6a173473cb152b6b1ae5f06d601d45dd699a129b0a8ca84e78b423031db5baa734741b')      
+      assert.equal(metamaskPersonalMsgs[msgId].rawSig, '0x6a1b65e2b8ed53cf398a769fad24738f9fbe29841fe6854e226953542c4b6a173473cb152b6b1ae5f06d601d45dd699a129b0a8ca84e78b423031db5baa734741b')
     })
   })
 
@@ -513,7 +515,7 @@ describe('MetaMaskController', function () {
     })
 
     it('sets up controller dnode api for trusted communication', function (done) {
-      streamTest = createThoughStream((chunk, enc, cb) => { 
+      streamTest = createThoughStream((chunk, enc, cb) => {
         assert.equal(chunk.name, 'controller')
         cb()
         done()