diff --git a/reference/forms/types/options/label_format.rst.inc b/reference/forms/types/options/label_format.rst.inc
index 45b57f3f25f..be16617d267 100644
--- a/reference/forms/types/options/label_format.rst.inc
+++ b/reference/forms/types/options/label_format.rst.inc
@@ -14,11 +14,11 @@ to a field. To avoid duplicated keyword messages, you can configure the label
 format to a static value, like::
 
     // ...
-    $profileFormBuilder->add('address', new AddressType(), array(
+    $profileFormBuilder->add('address', AddressType::class, array(
         'label_format' => 'form.address.%name%',
     ));
 
-    $invoiceFormBuilder->add('invoice', new AddressType(), array(
+    $invoiceFormBuilder->add('invoice', AddressType::class, array(
         'label_format' => 'form.address.%name%',
     ));