diff --git a/calendar/inc/class.calendar_so.inc.php b/calendar/inc/class.calendar_so.inc.php
index b16656b5a7..d69c129699 100644
--- a/calendar/inc/class.calendar_so.inc.php
+++ b/calendar/inc/class.calendar_so.inc.php
@@ -1985,7 +1985,7 @@ ORDER BY cal_user_type, cal_usre_id
 		$egw_rrule->current = clone $egw_rrule->time;
 		if ($expand_all)
 		{
-			unset($event['recur_excpetion']);
+			unset($event['recur_exception']);
 			$remote_rrule = calendar_rrule::event2rrule($event, false, $tz_id);
 			$remote_rrule->current = clone $remote_rrule->time;
 		}