diff --git a/calendar/inc/class.calendar_bo.inc.php b/calendar/inc/class.calendar_bo.inc.php
index c0db78ad05..1fffbcfae8 100644
--- a/calendar/inc/class.calendar_bo.inc.php
+++ b/calendar/inc/class.calendar_bo.inc.php
@@ -1160,7 +1160,7 @@ class calendar_bo
 					elseif (!is_numeric($uid))
 					{
 						// if the owner only grants EGW_ACL_FREEBUSY we are not interested in the recources explicit rights
-						if ($grant == EGW_ACL_FREEBUSY) break;
+						if ($grant == EGW_ACL_FREEBUSY) continue;
 						// if we have a resource as participant
 						$resource = $this->resource_info($uid);
 						$grant |= $resource['rights'];
diff --git a/calendar/inc/class.calendar_groupdav.inc.php b/calendar/inc/class.calendar_groupdav.inc.php
index 0a26cb86ab..6ba02afad1 100644
--- a/calendar/inc/class.calendar_groupdav.inc.php
+++ b/calendar/inc/class.calendar_groupdav.inc.php
@@ -1187,7 +1187,7 @@ class calendar_groupdav extends groupdav_handler
 	{
 		if (strpos($column=self::$path_attr,'_') === false) $column = 'cal_'.$column;
 
-		$event = $this->bo->read(array($column => $id, 'cal_deleted IS NULL'), null, true, 'server');
+		$event = $this->bo->read(array($column => $id, 'cal_deleted IS NULL', 'cal_reference=0'), null, true, 'server');
 		if ($event) $event = array_shift($event);	// read with array as 1. param, returns an array of events!
 
 		if (!($retval = $this->bo->check_perms(EGW_ACL_FREEBUSY,$event, 0, 'server')))