diff --git a/calendar/inc/class.calendar_boupdate.inc.php b/calendar/inc/class.calendar_boupdate.inc.php
index e2d4dbe9e0..aa97ff4df0 100644
--- a/calendar/inc/class.calendar_boupdate.inc.php
+++ b/calendar/inc/class.calendar_boupdate.inc.php
@@ -1636,7 +1636,7 @@ class calendar_boupdate extends calendar_bo
 			}
 			else
 			{
-				$matchFields = array('priority', 'public', 'non_blocking');
+				$matchFields = array('priority', 'public');
 			}
 			$matchFields[] = 'recurrence';
 			foreach ($matchFields as $key)
diff --git a/calendar/inc/class.calendar_ical.inc.php b/calendar/inc/class.calendar_ical.inc.php
index cf3cc762a1..8a6aa70481 100644
--- a/calendar/inc/class.calendar_ical.inc.php
+++ b/calendar/inc/class.calendar_ical.inc.php
@@ -2839,7 +2839,6 @@ class calendar_ical extends calendar_boupdate
 			elseif (strtolower($agendaEntryType) == 'event')
 			{
 				$event['special'] = '2';
-				$event['non_blocking'] = 1;
 			}
 		}