diff --git a/webpack.config.js b/webpack.config.js
index 97bf2f1..539f2ea 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -131,7 +131,7 @@ module.exports = {
     port: 4200,
     hot: isDev
   },
-  devtool: isDev ? 'source-map' : '',
+  devtool: isDev ? 'source-map' : false,
   plugins: plugins(),
   module: {
     rules: [