diff --git a/bundles/org.openhab.ui/web/build/webpack.config.js b/bundles/org.openhab.ui/web/build/webpack.config.js
index f309518073..6f79f71d96 100644
--- a/bundles/org.openhab.ui/web/build/webpack.config.js
+++ b/bundles/org.openhab.ui/web/build/webpack.config.js
@@ -180,7 +180,7 @@ module.exports = {
           }
         },
         generator: {
-          filename: 'images/[name].[ext]'
+          filename: 'images/[name][ext]'
         }
       },
       {
@@ -192,7 +192,7 @@ module.exports = {
           }
         },
         generator: {
-          filename: 'media/[name].[ext]'
+          filename: 'media/[name][ext]'
         }
       },
       {
@@ -204,7 +204,7 @@ module.exports = {
           }
         },
         generator: {
-          filename: 'fonts/[name].[ext]'
+          filename: 'fonts/[name][ext]'
         }
       },
       {