diff --git a/app.js b/app.js
index 9d5a692..690fd5b 100644
--- a/app.js
+++ b/app.js
@@ -3,7 +3,7 @@ class Setup {
     this.statusEl = document.createElement("p")
     document.body.appendChild(this.statusEl)
     this.updateStatus()
-    addEventListener('controllerchange', () => {
+    navigator.serviceWorker.addEventListener('controllerchange', () => {
       this.updateStatus()
     })
     await this.register()