diff --git a/docs/controller.md b/docs/controller.md
index c12c401..d04d7a0 100644
--- a/docs/controller.md
+++ b/docs/controller.md
@@ -102,3 +102,13 @@ class MyController extends PageController
 	}
 }
 ```
+
+Finally, update `config/services.yaml`:
+
+```
+services:
+    # ...
+
+    App\UrlGenerator\MyEntityGenerator:
+        public: true
+```