diff --git a/src/Symfony/Component/Form/FormBuilderInterface.php b/src/Symfony/Component/Form/FormBuilderInterface.php
index 998d3ec0d31a..412874567f7f 100644
--- a/src/Symfony/Component/Form/FormBuilderInterface.php
+++ b/src/Symfony/Component/Form/FormBuilderInterface.php
@@ -24,7 +24,7 @@ interface FormBuilderInterface extends \Traversable, \Countable, FormConfigBuild
      * object hierarchy.
      *
      * @param string|int|FormBuilderInterface $child
-     * @param string|FormTypeInterface        $type
+     * @param string|null                     $type
      * @param array                           $options
      *
      * @return FormBuilderInterface The builder object.
@@ -34,9 +34,9 @@ public function add($child, $type = null, array $options = array());
     /**
      * Creates a form builder.
      *
-     * @param string                   $name    The name of the form or the name of the property
-     * @param string|FormTypeInterface $type    The type of the form or null if name is a property
-     * @param array                    $options The options
+     * @param string      $name    The name of the form or the name of the property
+     * @param string|null $type    The type of the form or null if name is a property
+     * @param array       $options The options
      *
      * @return FormBuilderInterface The created builder.
      */