diff --git a/webpack.config.js b/webpack.config.js
index 62831a6..0e4c946 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -12,7 +12,7 @@ const commonConfig = {
     module: {
         rules: [
             {
-                exclude: /node_modules(?!\/js-utils)/,
+                exclude: /node_modules(?!(\/|\\)js-utils)/,
                 loader: 'babel-loader',
                 options: {
                     presets: [