diff --git a/webpack.config.js b/webpack.config.js
index 6711c1a..a4389b4 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -65,5 +65,5 @@ module.exports = {
   resolve: {
     extensions: ['.js', '.jsx']
   },
-  devtool: 'source-map'
+  devtool: devMode ? 'eval-cheap-module-source-map' : false,
 };