diff --git a/src/platform/web/docroot/sw.js b/src/platform/web/docroot/sw.js
index 7eab4758..8542492c 100644
--- a/src/platform/web/docroot/sw.js
+++ b/src/platform/web/docroot/sw.js
@@ -68,7 +68,7 @@ async function purgeOldCaches() {
     }
 }
 
-self.addEventListener('fetch', async (event) => {
+self.addEventListener('fetch', (event) => {
     if (event.request.method === "GET") {
         event.respondWith(handleRequest(event.request));
     }