diff --git a/calendar/inc/class.calendar_uiforms.inc.php b/calendar/inc/class.calendar_uiforms.inc.php
index 531c1b5b20..00ea5cc675 100644
--- a/calendar/inc/class.calendar_uiforms.inc.php
+++ b/calendar/inc/class.calendar_uiforms.inc.php
@@ -1424,8 +1424,10 @@ class calendar_uiforms extends calendar_ui
 				$content['participants'][$row]['delete_id'] = strpbrk($uid,'"\'<>') !== false ? md5($uid) : $uid;
 				//echo "<p>$uid ($quantity): $role --> {$content['participants'][$row]['role']}</p>\n";
 
-				$readonlys['participants'][$row]['status'] = !$this->bo->check_status_perms($uid,$event);
-				$readonlys['participants']['delete'][$uid] = $preserv['hide_delete'] || !$this->bo->check_perms(EGW_ACL_EDIT,$event);
+				if (!$this->bo->check_status_perms($uid,$event))
+					$readonlys['participants'][$row]['status'] = true;
+				if ($preserv['hide_delete'] || !$this->bo->check_perms(EGW_ACL_EDIT,$event))
+					$readonlys['participants']['delete'][$uid] = true;
 				// todo: make the participants available as links with email as title
 				$content['participants'][$row++]['title'] = $this->get_title($uid);
 				// enumerate group-invitations, so people can accept/reject them
@@ -1446,7 +1448,8 @@ class calendar_uiforms extends calendar_ui
 							);
 							$readonlys['participants'][$row]['quantity'] = $readonlys['participants']['delete'][$member] = true;
 							// read access is enough to invite participants, but you need edit rights to change status
-							$readonlys['participants'][$row]['status'] = !$this->bo->check_perms(EGW_ACL_EDIT,0,$member);
+							if (!$this->bo->check_perms(EGW_ACL_EDIT,0,$member))
+								$readonlys['participants'][$row]['status'] = true;
 							//$readonlys[$row.'[status]'] = !$this->bo->check_perms(EGW_ACL_EDIT,0,$member);
 							$content['participants'][$row++]['title'] = common::grab_owner_name($member);
 						}
diff --git a/calendar/setup/timezones.sqlite b/calendar/setup/timezones.sqlite
index b7e014abf8..9484230f0a 100644
Binary files a/calendar/setup/timezones.sqlite and b/calendar/setup/timezones.sqlite differ