diff --git a/lib/Doctrine/ORM/QueryBuilder.php b/lib/Doctrine/ORM/QueryBuilder.php
index b78ed59d0..6d0df50d7 100644
--- a/lib/Doctrine/ORM/QueryBuilder.php
+++ b/lib/Doctrine/ORM/QueryBuilder.php
@@ -238,6 +238,8 @@ class QueryBuilder
      * </code>
      *
      * @deprecated Please use $qb->getRootAliases() instead.
+     * @param string $rootAlias
+     * @param string $alias
      * @return string $rootAlias
      */
     public function getRootAlias($rootAlias = null, $alias = null)