diff --git a/tracker/tracker/rollup.config.js b/tracker/tracker/rollup.config.js
index 198119b11..dd7df7a04 100644
--- a/tracker/tracker/rollup.config.js
+++ b/tracker/tracker/rollup.config.js
@@ -8,5 +8,5 @@ export default {
     file: 'build/webworker.js',
     format: 'cjs',
   },
-  plugins: [resolve(), babel({ babelHelpers: 'bundled' }), terser()],
+  plugins: [resolve(), babel({ babelHelpers: 'bundled' }), terser({ mangle: { reserved: ['$'] } })],
 };