diff --git a/device/script.js b/device/script.js
index ba3c5f1..30f43e9 100644
--- a/device/script.js
+++ b/device/script.js
@@ -1,11 +1,7 @@
 $(document).ready(()=>{
 
   const baseUrl = `http://${window.location.hostname}`;
-  const canVibrate = "vibrate" in navigator || "mozVibrate" in navigator;
-  if (canVibrate && !("vibrate" in navigator)){navigator.vibrate = navigator.mozVibrate;}
-
   const content = $('.content');
-
   const urlString = window.location.href;
   const url = new URL(urlString);
   const sid = url.searchParams.get("sid");
@@ -94,7 +90,11 @@ $(document).ready(()=>{
   }
 
   function notify(vibrate){
-    if(vibrate){ navigator.vibrate(500); }
+    if(vibrate){
+      const canVibrate = "vibrate" in navigator || "mozVibrate" in navigator;
+      if (canVibrate && !("vibrate" in navigator)){navigator.vibrate = navigator.mozVibrate;}
+      navigator.vibrate(500);
+    }
     $('#notify1')[0].play();
   }