diff --git a/webpack.prod.config.babel.js b/webpack.prod.config.babel.js
index 13249547d64..f5acbdf2119 100644
--- a/webpack.prod.config.babel.js
+++ b/webpack.prod.config.babel.js
@@ -53,6 +53,7 @@ export default {
       CLIENT: true,
       SERVER: false,
       CLIENT_CONFIG: JSON.stringify(clientConfig),
+      'process.env.NODE_ENV': JSON.stringify('production'),
     }),
     // Replaces server config module with the subset clientConfig object.
     new webpack.NormalModuleReplacementPlugin(/config$/, 'client-config.js'),