diff --git a/src/client/webpack.production.config.js b/src/client/webpack.production.config.js
index c2c561b..4a56efc 100755
--- a/src/client/webpack.production.config.js
+++ b/src/client/webpack.production.config.js
@@ -26,6 +26,9 @@ module.exports = {
       filename: "./de/index.html",
       chunks: ["de"],
     }),
+    new webpack.DefinePlugin({
+      "process.env.NODE_ENV": JSON.stringify("production"),
+    }),
     new CopyWebpackPlugin({
       patterns: [
         { from: "./www" },
@@ -37,7 +40,7 @@ module.exports = {
       filename: "[name]/main.css",
     }),
   ],
-  mode: "development",
+  mode: "production",
 
   resolve: {
     // Add '.ts' and '.tsx' as resolvable extensions.