diff --git a/src/Web/wwwroot/app/vault/vaultController.js b/src/Web/wwwroot/app/vault/vaultController.js
index f97ab17740..9357d106ff 100644
--- a/src/Web/wwwroot/app/vault/vaultController.js
+++ b/src/Web/wwwroot/app/vault/vaultController.js
@@ -127,7 +127,9 @@
 
             apiService.sites.del({ id: site.id }, function () {
                 var index = $scope.sites.indexOf(site);
-                $scope.sites.splice(index, 1);
+                if (index > -1) {
+                    $scope.sites.splice(index, 1);
+                }
             });
         };
 
@@ -174,7 +176,9 @@
 
             apiService.folders.del({ id: folder.id }, function () {
                 var index = $scope.folders.indexOf(folder);
-                $scope.folders.splice(index, 1);
+                if (index > -1) {
+                    $scope.folders.splice(index, 1);
+                }
             });
         };