diff --git a/service_container/autowiring.rst b/service_container/autowiring.rst
index 91a434dee5c..ddd6a4618e1 100644
--- a/service_container/autowiring.rst
+++ b/service_container/autowiring.rst
@@ -358,9 +358,10 @@ Suppose you create a second class - ``UppercaseTransformer`` that implements
     }
 
 If you register this as a service, you now have *two* services that implement the
-``App\Util\TransformerInterface`` type. Symfony doesn't know which one should
-be used for autowiring, so you need to choose one by creating an alias from the type
-to the correct service id (see :ref:`autowiring-interface-alias`).
+``App\Util\TransformerInterface`` type. Autowiring subsystem can not decide
+which one to use. Remember, autowiring isn't magic; it simply looks for a service
+whose id matches the type-hint. So you need to choose one by creating an alias
+from the type to the correct service id (see :ref:`autowiring-interface-alias`).
 
 If you want ``Rot13Transformer`` to be the service that's used for autowiring, create
 that alias: