diff --git a/DocsV2/docs/Mailing/README.md b/DocsV2/docs/Mailing/README.md
index 02033b6..818182f 100644
--- a/DocsV2/docs/Mailing/README.md
+++ b/DocsV2/docs/Mailing/README.md
@@ -106,6 +106,7 @@ To configure it, in `Program.cs` instead of calling `AddMailer()` you do:
 ```csharp
 var builder = WebApplication.CreateBuilder(args);
 
+builder.Services.AddScoped<MyHttpApiCustomMailer>();
 builder.AddCustomMailer<MyHttpApiCustomMailer>();
 ```