diff --git a/development/mockExtension.js b/development/mockExtension.js
index 55799b2bf..ac03d965c 100644
--- a/development/mockExtension.js
+++ b/development/mockExtension.js
@@ -37,3 +37,8 @@ apis.forEach(function (api) {
 
 extension.runtime.reload = noop
 extension.tabs.create = noop
+extension.runtime.getManifest = function () {
+  return {
+    version: 'development'
+  }
+}
\ No newline at end of file
diff --git a/mock-dev.js b/mock-dev.js
index 0a3eb12ce..8827ddfdd 100644
--- a/mock-dev.js
+++ b/mock-dev.js
@@ -23,6 +23,7 @@ const states = require('./development/states')
 const Selector = require('./development/selector')
 const MetamaskController = require('./app/scripts/metamask-controller')
 const firstTimeState = require('./app/scripts/first-time-state')
+const ExtensionPlatform = require('./app/scripts/platforms/extension')
 const extension = require('./development/mockExtension')
 const noop = function () {}
 
@@ -67,6 +68,7 @@ const controller = new MetamaskController({
   initState: firstTimeState,
 })
 global.metamaskController = controller
+global.platform = new ExtensionPlatform
 
 //
 // User Interface