1 files changed, 1 insertions, 1 deletions
diff --git a/www/js/MonitorCtrl.js b/www/js/MonitorCtrl.js
index 42683717..97110760 100644
--- a/www/js/MonitorCtrl.js
+++ b/www/js/MonitorCtrl.js
@@ -31,7 +31,7 @@ angular.module('zmApp.controllers')
 
             $ionicPlatform.registerBackButtonAction(function (e) {
                 e.preventDefault();
-                if ($scope.modal.isShown()) {
+                if ($scope.modal != undefined && $scope.modal.isShown()) {
                     // switch off awake, as liveview is finished
                     ZMDataModel.zmDebug("Modal is open, closing it");
                     ZMDataModel.setAwake(false);