diff --git a/web/push-notif/push-notifs-handler.js b/web/push-notif/push-notifs-handler.js
--- a/web/push-notif/push-notifs-handler.js
+++ b/web/push-notif/push-notifs-handler.js
@@ -102,7 +102,7 @@
     }
 
     const workerRegistration = await navigator.serviceWorker?.ready;
-    if (!workerRegistration) {
+    if (!workerRegistration || !workerRegistration.pushManager) {
       return;
     }