diff --git a/www/scripts/common/websockets/subscriberManager.js b/www/scripts/common/websockets/subscriberManager.js
index f4af6c5634..1ba452d74d 100644
--- a/www/scripts/common/websockets/subscriberManager.js
+++ b/www/scripts/common/websockets/subscriberManager.js
@@ -31,6 +31,9 @@ define([
         },
         'pushCallback': function (callback) {
             callbackStack.push(callback);
+        },
+        'hasCallbacks' : function() {
+            return callbackStack.length > 0;
         }
     }
 });