diff --git a/docs/en/tutorials/modular-crm/part-06.md b/docs/en/tutorials/modular-crm/part-06.md
index 5ce9d8aad0..a9fa3a87aa 100644
--- a/docs/en/tutorials/modular-crm/part-06.md
+++ b/docs/en/tutorials/modular-crm/part-06.md
@@ -95,7 +95,6 @@ using Volo.Abp.Domain.Repositories;
 
 namespace ModularCrm.Catalog.Integration;
 
-[IntegrationService]
 public class ProductIntegrationService
     : CatalogAppService, IProductIntegrationService
 {