diff --git a/calendar/inc/class.calendar_boupdate.inc.php b/calendar/inc/class.calendar_boupdate.inc.php
index b30ed1e181..4eaca20a5f 100644
--- a/calendar/inc/class.calendar_boupdate.inc.php
+++ b/calendar/inc/class.calendar_boupdate.inc.php
@@ -1140,7 +1140,7 @@ class calendar_boupdate extends calendar_bo
 							$calendar_ical->setSupportedFields('full');	// full iCal fields+event TZ
 							// we need to pass $event[id] so iCal class reads event again,
 							// as event is in user TZ, but iCal class expects server TZ!
-							$ics = $calendar_ical->exportVCal($cleared_event,
+							$ics = $calendar_ical->exportVCal([$cleared_event],
 								'2.0', $method, $cleared_event['recur_date'],
 								'', 'utf-8', $method == 'REPLY' ? $user : 0
 							);