diff --git a/config/webpack.config.js b/config/webpack.config.js
index 2ada74e5a55..ce140b75382 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.js
@@ -102,7 +102,7 @@ var config = {
         loader: 'file-loader',
       },
       {
-        test: /locale\/[a-z]+\/(.*)\.js$/,
+        test: /locale\/\w+\/(.*)\.js$/,
         loader: 'exports-loader?locales',
       },
     ]