diff --git a/client-web/index.js b/client-web/index.js
index 3b29be2..91d9e08 100644
--- a/client-web/index.js
+++ b/client-web/index.js
@@ -80,7 +80,9 @@ function connect() {
     var incorrectDetail = 0;
 
     ws.onopen = () => {
-        Notification.requestPermission();
+        if (typeof Notification !== "undefined") {
+            Notification.requestPermission();
+        }
         console.log('Connected!');
         document.getElementById('login').style.display = 'none';
         document.getElementById('messaging').style.display = 'block';