diff --git a/framework/src/Volo.Abp.Ddd.Application.Contracts/Volo/Abp/Application/Services/IReadOnlyAppService.cs b/framework/src/Volo.Abp.Ddd.Application.Contracts/Volo/Abp/Application/Services/IReadOnlyAppService.cs
index eb03faffe3..09df0dc9cd 100644
--- a/framework/src/Volo.Abp.Ddd.Application.Contracts/Volo/Abp/Application/Services/IReadOnlyAppService.cs
+++ b/framework/src/Volo.Abp.Ddd.Application.Contracts/Volo/Abp/Application/Services/IReadOnlyAppService.cs
@@ -1,5 +1,4 @@
 using System.Threading.Tasks;
-
 using Volo.Abp.Application.Dtos;
 
 namespace Volo.Abp.Application.Services