diff --git a/book/validation.rst b/book/validation.rst
index ac4bacfdbd3..a600ac6f6c8 100644
--- a/book/validation.rst
+++ b/book/validation.rst
@@ -117,7 +117,9 @@ constraints. If validation fails, a non-empty list of errors
 (class :class:`Symfony\\Component\\Validator\\ConstraintViolationList`) is
 returned. Take this simple example from inside a controller:
 
-    // ...
+.. code-block:: php
+
+    //...
     use Symfony\Component\HttpFoundation\Response;
     use Acme\BlogBundle\Entity\Author;
 
@@ -142,7 +144,7 @@ returned. Take this simple example from inside a controller:
 
         return new Response('The author is valid! Yes!');
     }
-
+    
 If the ``$name`` property is empty, you will see the following error
 message: