diff --git a/book/forms.rst b/book/forms.rst
index b6f4ddbfd4d..b66dab4a1de 100644
--- a/book/forms.rst
+++ b/book/forms.rst
@@ -1578,9 +1578,8 @@ file:
 
         # app/config/config.yml
         twig:
-            form:
-                resources:
-                    - 'AcmeTaskBundle:Form:fields.html.twig'
+            form_themes:
+                - 'AcmeTaskBundle:Form:fields.html.twig'
             # ...
 
     .. code-block:: xml
@@ -1594,9 +1593,7 @@ file:
                 http://symfony.com/schema/dic/twig http://symfony.com/schema/dic/twig/twig-1.0.xsd">
 
             <twig:config>
-                <twig:form>
-                    <twig:resource>AcmeTaskBundle:Form:fields.html.twig</twig:resource>
-                </twig:form>
+                <twig:theme>AcmeTaskBundle:Form:fields.html.twig</twig:theme>
                 <!-- ... -->
             </twig:config>
         </container>
@@ -1605,10 +1602,8 @@ file:
 
         // app/config/config.php
         $container->loadFromExtension('twig', array(
-            'form' => array(
-                'resources' => array(
-                    'AcmeTaskBundle:Form:fields.html.twig',
-                ),
+            'form_themes' => array(
+                'AcmeTaskBundle:Form:fields.html.twig',
             ),
             // ...
         ));
diff --git a/cookbook/form/create_custom_field_type.rst b/cookbook/form/create_custom_field_type.rst
index 3cb5f33c265..aa5420d32a6 100644
--- a/cookbook/form/create_custom_field_type.rst
+++ b/cookbook/form/create_custom_field_type.rst
@@ -159,27 +159,22 @@ link for details), create a ``gender_widget`` block to handle this:
 
             # app/config/config.yml
             twig:
-                form:
-                    resources:
-                        - 'AcmeDemoBundle:Form:fields.html.twig'
+                form_themes:
+                    - 'AcmeDemoBundle:Form:fields.html.twig'
 
         .. code-block:: xml
 
             <!-- app/config/config.xml -->
             <twig:config>
-                <twig:form>
-                    <twig:resource>AcmeDemoBundle:Form:fields.html.twig</twig:resource>
-                </twig:form>
+                <twig:form-theme>AcmeDemoBundle:Form:fields.html.twig</twig:form-theme>
             </twig:config>
 
         .. code-block:: php
 
             // app/config/config.php
             $container->loadFromExtension('twig', array(
-                'form' => array(
-                    'resources' => array(
-                        'AcmeDemoBundle:Form:fields.html.twig',
-                    ),
+                'form_themes' => array(
+                    'AcmeDemoBundle:Form:fields.html.twig',
                 ),
             ));