diff --git a/calendar/inc/class.calendar_uiforms.inc.php b/calendar/inc/class.calendar_uiforms.inc.php
index e3a8baa1bf..4c9b329a07 100644
--- a/calendar/inc/class.calendar_uiforms.inc.php
+++ b/calendar/inc/class.calendar_uiforms.inc.php
@@ -918,7 +918,7 @@ class calendar_uiforms extends calendar_ui
 			$content['alarm'] = array(false);
 			foreach(array_values($event['alarm']) as $id => $alarm)
 			{
-				if (!$alarm['all'] && !$this->bo->check_perms(EGW_ACL_READALARM,0,$alarm['owner']))
+				if (!$alarm['all'] && !$this->bo->check_perms(EGW_ACL_READ,0,$alarm['owner']))
 				{
 					continue;	// no read rights to the calendar of the alarm-owner, dont show the alarm
 				}