diff --git a/karma.conf.pubnub-v4.js b/karma.conf.pubnub-v4.js
index c624c73..63a82b2 100644
--- a/karma.conf.pubnub-v4.js
+++ b/karma.conf.pubnub-v4.js
@@ -15,7 +15,7 @@ module.exports = function(config) {
 
     // list of files / patterns to load in the browser
     files: [
-      'test/polyfills/bind.js',
+      'node_modules/babel-polyfill/dist/polyfill.js',
       'bower_components/angular/angular.js',
       'bower_components/angular-mocks/angular-mocks.js',
       'bower_components/pubnub-v4/dist/web/pubnub.js',
diff --git a/package.json b/package.json
index b6b0603..edea895 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
   ],
   "devDependencies": {
     "babel-loader": "^6.2.7",
+    "babel-polyfill": "^6.26.0",
     "babel-preset-es2015": "^6.18.0",
     "babel-register": "^6.18.0",
     "eslint": "^3.9.1",
@@ -52,4 +53,4 @@
     "webpack-dev-server": "^1.16.2",
     "webpack-stream": "^3.2.0"
   }
-}
\ No newline at end of file
+}