diff --git a/static/js/grab-canvas.js b/static/js/grab-canvas.js
index 6798604..6afac9c 100644
--- a/static/js/grab-canvas.js
+++ b/static/js/grab-canvas.js
@@ -46,11 +46,15 @@
         throw new Error("Element don't habe video track")
     }
 
-    const AudioContext = window.AudioContext || window.webkitAudioContext;
-    if(AudioContext){
-        const audioContext = new AudioContext();
-        audioContext.createMediaStreamSource(canvasStream)
-            .connect(audioContext.destination)
+    try {
+        const AudioContext = window.AudioContext || window.webkitAudioContext;
+        if(AudioContext){
+            const audioContext = new AudioContext();
+            audioContext.createMediaStreamSource(canvasStream)
+                .connect(audioContext.destination)
+        }
+    } catch(e){
+        console.warn(e)
     }
 
     const offer = await conn.createOffer();