diff --git a/modules/cms-kit/src/Volo.CmsKit.Admin.Application/Volo/CmsKit/Admin/Menus/MenuItemAdminAppService.cs b/modules/cms-kit/src/Volo.CmsKit.Admin.Application/Volo/CmsKit/Admin/Menus/MenuItemAdminAppService.cs
index 5fbaf3c802..d35579c6cf 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Admin.Application/Volo/CmsKit/Admin/Menus/MenuItemAdminAppService.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Admin.Application/Volo/CmsKit/Admin/Menus/MenuItemAdminAppService.cs
@@ -163,7 +163,7 @@ public class MenuItemAdminAppService : CmsKitAdminAppServiceBase, IMenuItemAdmin
         );
     }
 
-    public async Task<int> GetAvailableMenuOrderAsync(Guid? parentId = null)
+    public virtual async Task<int> GetAvailableMenuOrderAsync(Guid? parentId = null)
     {
         var highestOrder = await MenuItemRepository.GetHighestMenuOrderAsync(parentId);
         return highestOrder + 1;