diff --git a/lib/Twig/NodeVisitorInterface.php b/lib/Twig/NodeVisitorInterface.php
old mode 100644
new mode 100755
index d44e510c8..e0123b5dc
--- a/lib/Twig/NodeVisitorInterface.php
+++ b/lib/Twig/NodeVisitorInterface.php
@@ -23,7 +23,7 @@ interface Twig_NodeVisitorInterface
      * @param Twig_NodeInterface $node The node to visit
      * @param Twig_Environment   $env  The Twig environment instance
      *
-     * @param Twig_NodeInterface The modified node
+     * @return Twig_NodeInterface The modified node
      */
     function enterNode(Twig_NodeInterface $node, Twig_Environment $env);
 
@@ -33,7 +33,7 @@ interface Twig_NodeVisitorInterface
      * @param Twig_NodeInterface $node The node to visit
      * @param Twig_Environment   $env  The Twig environment instance
      *
-     * @param Twig_NodeInterface The modified node
+     * @return Twig_NodeInterface The modified node
      */
     function leaveNode(Twig_NodeInterface $node, Twig_Environment $env);