diff --git a/lib/Doctrine/ORM/Mapping/NamingStrategy.php b/lib/Doctrine/ORM/Mapping/NamingStrategy.php
index 843a39912..958f6767a 100644
--- a/lib/Doctrine/ORM/Mapping/NamingStrategy.php
+++ b/lib/Doctrine/ORM/Mapping/NamingStrategy.php
@@ -70,6 +70,7 @@ interface NamingStrategy
      * Returns a join column name for a property.
      *
      * @param string $propertyName A property name.
+     * @param string|null $className    The fully-qualified class name.
      *
      * @return string A join column name.
      */