diff --git a/src/views/apps.js b/src/views/apps.js
index fee05c125..aac6ce28e 100644
--- a/src/views/apps.js
+++ b/src/views/apps.js
@@ -130,7 +130,7 @@ angular.module('Application').controller('AppsController', ['$scope', '$location
                 enableBackup: $scope.appConfigure.enableBackup
             };
 
-            if ($scope.appConfigure.mailboxName) data.mailboxName = $scope.appConfigure.mailboxName;
+            if ($scope.appConfigure.mailboxName !== $scope.appConfigure.app.mailboxName) data.mailboxName = $scope.appConfigure.mailboxName;
 
             Client.configureApp($scope.appConfigure.app.id, data, function (error) {
                 if (error) {