diff --git a/RedBeanPHP/QueryWriter/MySQL.php b/RedBeanPHP/QueryWriter/MySQL.php
index 4e9a4b3cb..1e274ac70 100644
--- a/RedBeanPHP/QueryWriter/MySQL.php
+++ b/RedBeanPHP/QueryWriter/MySQL.php
@@ -144,6 +144,7 @@ protected function getKeyMapForType( $type )
 	 * object.
 	 *
 	 * @param Adapter $adapter Database Adapter
+	 * @param array   $options options array
 	 */
 	public function __construct( Adapter $adapter, $options = array() )
 	{