diff --git a/cookbook/form/create_form_type_extension.rst b/cookbook/form/create_form_type_extension.rst
index 02cef5f12b7..4d855c1d5f3 100644
--- a/cookbook/form/create_form_type_extension.rst
+++ b/cookbook/form/create_form_type_extension.rst
@@ -216,7 +216,7 @@ it in the view::
          */
         public function setDefaultOptions(OptionsResolverInterface $resolver)
         {
-            $resolver->setOptional(array('image_path'));
+            $resolver->setDefined(array('image_path'));
         }
 
         /**
diff --git a/cookbook/form/data_transformers.rst b/cookbook/form/data_transformers.rst
index 072d02a1aa8..ff848e90b87 100644
--- a/cookbook/form/data_transformers.rst
+++ b/cookbook/form/data_transformers.rst
@@ -139,12 +139,8 @@ by calling ``addModelTransformer`` (or ``addViewTransformer`` - see
                 ->setDefaults(array(
                     'data_class' => 'Acme\TaskBundle\Entity\Task',
                 ))
-                ->setRequired(array(
-                    'em',
-                ))
-                ->setAllowedTypes(array(
-                    'em' => 'Doctrine\Common\Persistence\ObjectManager',
-                ));
+                ->setRequired(array('em'))
+                ->setAllowedTypes('em', 'Doctrine\Common\Persistence\ObjectManager')
 
             // ...
         }