diff --git a/modules/users/src/Volo.Abp.Users.Abstractions/Volo/Abp/Users/UserPasswordChangeRequestedEto.cs b/modules/users/src/Volo.Abp.Users.Abstractions/Volo/Abp/Users/UserPasswordChangeRequestedEto.cs
index f28424714b..d570acab95 100644
--- a/modules/users/src/Volo.Abp.Users.Abstractions/Volo/Abp/Users/UserPasswordChangeRequestedEto.cs
+++ b/modules/users/src/Volo.Abp.Users.Abstractions/Volo/Abp/Users/UserPasswordChangeRequestedEto.cs
@@ -1,13 +1,13 @@
 using System;
 using Volo.Abp.EventBus;
-using Volo.Abp.MultiTenancy;
 
 namespace Volo.Abp.Users;
 
+[Serializable]
 [EventName("Volo.Abp.Users.UserPasswordChangeRequested")]
-public class UserPasswordChangeRequestedEto : IMultiTenant
+public class UserPasswordChangeRequestedEto
 {
-    public Guid? TenantId { get; set; }
+    public Guid TenantId { get; set; }
 
     public string UserName { get; set; }