diff --git a/calendar/inc/class.calendar_bo.inc.php b/calendar/inc/class.calendar_bo.inc.php
index 81aa63da54..1977d5bc4d 100644
--- a/calendar/inc/class.calendar_bo.inc.php
+++ b/calendar/inc/class.calendar_bo.inc.php
@@ -637,6 +637,7 @@ class calendar_bo
 			'modified'	=> $event['modified'],
 			'owner'		=> $event['owner'],
 			'recur_type' => MCAL_RECUR_NONE,
+			'uid'	=> $event['uid'],
 			'etag'	=> $event['etag'],
 			'participants' => array_intersect_key($event['participants'],array_flip($allowed_participants)),
 			'public'=> 0,