diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
index fa8e53ef..71aae88d 100644
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -10,8 +10,7 @@
 // Read Sprockets README (https://github.com/sstephenson/sprockets#sprockets-directives) for details
 // about supported directives.
 
-// Need to be on top to allow Poltergeist test to work with React.
-//= require es5-shim/es5-shim
+// Need to be on top to allow Poltergeist test to work with React: es5-shim/es5-shim. This is lincluded in app-bundle.
 //= require react_on_rails
 
 // It is important that generated/vendor-bundle must be before bootstrap since it is exposing jQuery and jQuery-ujs
diff --git a/client/webpack.client.rails.config.js b/client/webpack.client.rails.config.js
index 96db2643..a7d4b170 100644
--- a/client/webpack.client.rails.config.js
+++ b/client/webpack.client.rails.config.js
@@ -24,7 +24,8 @@ config.entry.app.push('./app/startup/clientGlobals');
 // See webpack.common.config for adding modules common to both the webpack dev server and rails
 
 config.module.loaders.push(
-  {test: /\.jsx?$/, loader: 'babel-loader', exclude: /node_modules/}
+  {test: /\.jsx?$/, loader: 'babel-loader', exclude: /node_modules/},
+  {test: require.resolve('react'), loader: 'imports?shim=es5-shim/es5-shim&sham=es5-shim/es5-sham'}
 );
 
 module.exports = config;