diff --git a/docs/en/Customizing-Application-Modules-Overriding-Services.md b/docs/en/Customizing-Application-Modules-Overriding-Services.md
index d58f0f8565..7b8b156453 100644
--- a/docs/en/Customizing-Application-Modules-Overriding-Services.md
+++ b/docs/en/Customizing-Application-Modules-Overriding-Services.md
@@ -60,6 +60,7 @@ In most cases, you will want to change one or a few methods of the current imple
 
 ````csharp
 [Dependency(ReplaceServices = true)]
+[ExposeServices(typeof(IdentityUserAppService))]
 public class MyIdentityUserAppService : IdentityUserAppService
 {
     //...