diff --git a/cookbook/routing/custom_route_loader.rst b/cookbook/routing/custom_route_loader.rst
index 42ab3ad17ed..14f9142bc04 100644
--- a/cookbook/routing/custom_route_loader.rst
+++ b/cookbook/routing/custom_route_loader.rst
@@ -66,7 +66,7 @@ type you want. The resource name itself is not actually used in the example::
     namespace Acme\DemoBundle\Routing;
 
     use Symfony\Component\Config\Loader\LoaderInterface;
-    use Symfony\Component\Config\Loader\LoaderResolver;
+    use Symfony\Component\Config\Loader\LoaderResolverInterface;
     use Symfony\Component\Routing\Route;
     use Symfony\Component\Routing\RouteCollection;
 
@@ -110,7 +110,7 @@ type you want. The resource name itself is not actually used in the example::
             // and if you do, using the Loader base class is easier (see below)
         }
 
-        public function setResolver(LoaderResolver $resolver)
+        public function setResolver(LoaderResolverInterface $resolver)
         {
             // same as above
         }