diff --git a/html5/verto/verto_communicator/src/vertoControllers/controllers/MainController.js b/html5/verto/verto_communicator/src/vertoControllers/controllers/MainController.js
index 877b8f7836..31ea3794d1 100644
--- a/html5/verto/verto_communicator/src/vertoControllers/controllers/MainController.js
+++ b/html5/verto/verto_communicator/src/vertoControllers/controllers/MainController.js
@@ -275,6 +275,7 @@
         }
         angular.element('#wrapper').toggleClass('toggled');
         $rootScope.chatStatus = angular.element('#wrapper').hasClass('toggled');
+        updateVideoSize();
       };
 
       $rootScope.openChat = function() {