diff --git a/phpBB/includes/event/dispatcher_interface.php b/phpBB/includes/event/dispatcher_interface.php
index 2564591ed7..0a4881b3ba 100644
--- a/phpBB/includes/event/dispatcher_interface.php
+++ b/phpBB/includes/event/dispatcher_interface.php
@@ -35,7 +35,7 @@ interface phpbb_event_dispatcher_interface
 	 *
 	 * @api
 	 */
-	function dispatch($event_name, Event $event = null);
+	function dispatch($event_name, phpbb_event $event = null);
 
 	/**
 	 * Adds an event listener that listens on the specified events.