diff --git a/web/app/assets/javascripts/fakeJamClient.js b/web/app/assets/javascripts/fakeJamClient.js
index 0e21c3a63..87504b7e8 100644
--- a/web/app/assets/javascripts/fakeJamClient.js
+++ b/web/app/assets/javascripts/fakeJamClient.js
@@ -88,7 +88,10 @@
             videoShared=false;
         }
       
-        function SessStartVideoSharing(bitrate=0) {
+        function SessStartVideoSharing(bitrate) {
+            if (!bitrate || typeof(bitrate)=="undefined") {
+                bitrate = 0
+            }
             videoShared=true;   
         }