diff --git a/calendar/inc/class.calendar_boupdate.inc.php b/calendar/inc/class.calendar_boupdate.inc.php
index 5b87a380e9..956372d142 100644
--- a/calendar/inc/class.calendar_boupdate.inc.php
+++ b/calendar/inc/class.calendar_boupdate.inc.php
@@ -1707,7 +1707,7 @@ class calendar_boupdate extends calendar_bo
 			}
 			else
 			{
-				$matchFields = array('priority', 'public', 'non_blocking');
+				$matchFields = array('priority', 'public');
 			}
 			$matchFields[] = 'recurrence';
 			foreach ($matchFields as $key)
diff --git a/calendar/inc/class.calendar_ical.inc.php b/calendar/inc/class.calendar_ical.inc.php
index 29128ae74a..5f60c7006d 100644
--- a/calendar/inc/class.calendar_ical.inc.php
+++ b/calendar/inc/class.calendar_ical.inc.php
@@ -2843,7 +2843,6 @@ class calendar_ical extends calendar_boupdate
 			elseif (strtolower($agendaEntryType) == 'event')
 			{
 				$event['special'] = '2';
-				$event['non_blocking'] = 1;
 			}
 		}