diff --git a/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Blogs/CreateBlogDto.cs b/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Blogs/CreateBlogDto.cs
index 1afe85e2f1..31005b7a5b 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Blogs/CreateBlogDto.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Admin.Application.Contracts/Volo/CmsKit/Admin/Blogs/CreateBlogDto.cs
@@ -1,4 +1,5 @@
-using System.ComponentModel.DataAnnotations;
+using System;
+using System.ComponentModel.DataAnnotations;
 using Volo.Abp.Validation;
 using Volo.CmsKit.Blogs;