diff --git a/service_container.rst b/service_container.rst
index c0a0f56a8fa..40321868281 100644
--- a/service_container.rst
+++ b/service_container.rst
@@ -1010,7 +1010,7 @@ admin email. In this case, each needs to have a unique service id:
                     <argument>contact@example.com</argument>
                 </service>
 
-                <alias id="App\Updates\SiteUpdateManager" service="site_update_manager.superadmin" />
+                <service id="App\Updates\SiteUpdateManager" alias="site_update_manager.superadmin" />
             </services>
         </container>