diff --git a/aspnet-core/modules/identityServer/LINGYUN.Abp.IdentityServer.SmsValidator/LINGYUN/Abp/IdentityServer/SmsValidator/SmsTokenGrantValidator.cs b/aspnet-core/modules/identityServer/LINGYUN.Abp.IdentityServer.SmsValidator/LINGYUN/Abp/IdentityServer/SmsValidator/SmsTokenGrantValidator.cs
index 59cbdcade..3f6f0b35d 100644
--- a/aspnet-core/modules/identityServer/LINGYUN.Abp.IdentityServer.SmsValidator/LINGYUN/Abp/IdentityServer/SmsValidator/SmsTokenGrantValidator.cs
+++ b/aspnet-core/modules/identityServer/LINGYUN.Abp.IdentityServer.SmsValidator/LINGYUN/Abp/IdentityServer/SmsValidator/SmsTokenGrantValidator.cs
@@ -27,7 +27,6 @@ namespace LINGYUN.Abp.IdentityServer.SmsValidator
         protected IEventService EventService { get; }
         protected IIdentityUserRepository UserRepository { get; }
         protected UserManager<IdentityUser> UserManager { get; }
-        protected SignInManager<IdentityUser> SignInManager { get; }
         protected IdentitySecurityLogManager IdentitySecurityLogManager { get; }
         protected IStringLocalizer<IdentityResource> IdentityLocalizer { get; }
         protected IStringLocalizer<AbpIdentityServerResource> IdentityServerLocalizer { get; }