diff --git a/gulp/webpack.production.config.js b/gulp/webpack.production.config.js
index fdd477b9..7308ef00 100644
--- a/gulp/webpack.production.config.js
+++ b/gulp/webpack.production.config.js
@@ -131,6 +131,7 @@ module.exports = ({
                             warnings: true,
                         },
                         mangle: {
+                            reserved: ["__$S__"],
                             eval: true,
                             keep_classnames: !minifyNames,
                             keep_fnames: !minifyNames,