diff --git a/cookbook/form/create_custom_field_type.rst b/cookbook/form/create_custom_field_type.rst
index 91dfe580c5e..78017b263cd 100644
--- a/cookbook/form/create_custom_field_type.rst
+++ b/cookbook/form/create_custom_field_type.rst
@@ -167,13 +167,13 @@ link for details), create a ``gender_widget`` block to handle this:
             # app/config/config.yml
             twig:
                 form_themes:
-                    - 'AppBundle:Form:fields.html.twig'
+                    - ':form/fields.html.twig'
 
         .. code-block:: xml
 
             <!-- app/config/config.xml -->
             <twig:config>
-                <twig:form-theme>AppBundle:Form:fields.html.twig</twig:form-theme>
+                <twig:form-theme>:form/fields.html.twig</twig:form-theme>
             </twig:config>
 
         .. code-block:: php
@@ -181,7 +181,7 @@ link for details), create a ``gender_widget`` block to handle this:
             // app/config/config.php
             $container->loadFromExtension('twig', array(
                 'form_themes' => array(
-                    'AppBundle:Form:fields.html.twig',
+                    ':form/fields.html.twig',
                 ),
             ));
 
@@ -196,7 +196,7 @@ link for details), create a ``gender_widget`` block to handle this:
                 templating:
                     form:
                         resources:
-                            - 'AppBundle:Form'
+                            - ':form:fields.html.twig'
 
         .. code-block:: xml
 
@@ -211,7 +211,7 @@ link for details), create a ``gender_widget`` block to handle this:
                 <framework:config>
                     <framework:templating>
                         <framework:form>
-                            <framework:resource>AppBundle:Form</twig:resource>
+                            <framework:resource>:form:fields.html.twig</twig:resource>
                         </framework:form>
                     </framework:templating>
                 </framework:config>
@@ -224,7 +224,7 @@ link for details), create a ``gender_widget`` block to handle this:
                 'templating' => array(
                     'form' => array(
                         'resources' => array(
-                            'AppBundle:Form',
+                            ':form:fields.html.twig',
                         ),
                     ),
                 ),