diff --git a/examples/advanced/web_server/math_worker.js b/examples/advanced/web_server/math_worker.js
index 2c7c0baa4..6174eeef6 100644
--- a/examples/advanced/web_server/math_worker.js
+++ b/examples/advanced/web_server/math_worker.js
@@ -1,4 +1,4 @@
-const { create, all } = require('../../../index')
+const { create, all } = require('../../../main/es5/index.js')
 const workerpool = require('workerpool')
 const math = create(all)