diff --git a/docs/en/Dependency-Injection.md b/docs/en/Dependency-Injection.md
index 35bb19f5cc..e5ad10aa93 100644
--- a/docs/en/Dependency-Injection.md
+++ b/docs/en/Dependency-Injection.md
@@ -59,7 +59,7 @@ Some specific types are registered to dependency injection by default. Examples:
 * MVC controllers (inherit ``Controller`` or ``AbpController``) are registered as transient.
 * MVC page models (inherit ``PageModel`` or ``AbpPageModel``) are registered as transient.
 * MVC view components (inherit ``ViewComponent`` or ``AbpViewComponent``) are registered as transient.
-* Application services (inherit ``ApplicationService`` class) are registered as transient.
+* Application services (inherit ``ApplicationService`` class or its subclasses) are registered as transient.
 * Repositories (implement ``BasicRepositoryBase`` class or its subclasses) are registered as transient.
 * Domain services (implement ``IDomainService`` interface) are registered as transient.