diff --git a/superset-frontend/webpack.config.js b/superset-frontend/webpack.config.js
index c2c818dbeadd0..d6b280c7537e0 100644
--- a/superset-frontend/webpack.config.js
+++ b/superset-frontend/webpack.config.js
@@ -363,7 +363,7 @@ const config = {
           {
             loader: 'css-loader',
             options: {
-              sourceMap: isDevMode,
+              sourceMap: true,
             },
           },
         ],
@@ -376,13 +376,13 @@ const config = {
           {
             loader: 'css-loader',
             options: {
-              sourceMap: isDevMode,
+              sourceMap: true,
             },
           },
           {
             loader: 'less-loader',
             options: {
-              sourceMap: isDevMode,
+              sourceMap: true,
               javascriptEnabled: true,
             },
           },
@@ -450,7 +450,7 @@ const config = {
     'react/lib/ReactContext': true,
   },
   plugins,
-  devtool: false,
+  devtool: 'source-map',
 };
 
 // find all the symlinked plugins and use their source code for imports