diff --git a/webpack.config.js b/webpack.config.js
index <HASH>..<HASH> 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -136,9 +136,7 @@ const webpackConfig = {
 	},
 	plugins: _.compact( [
 		new webpack.DefinePlugin( {
-			'process.env': {
-				NODE_ENV: JSON.stringify( bundleEnv )
-			},
+			'process.env.NODE_ENV': JSON.stringify( bundleEnv ),
 			'PROJECT_NAME': JSON.stringify( config( 'project' ) )
 		} ),
 		new webpack.IgnorePlugin( /^props$/ ),
Webpack: don't overwrite process.env, only process.env.NODE_ENV (#<I>)