diff --git a/addressbook/inc/class.addressbook_groupdav.inc.php b/addressbook/inc/class.addressbook_groupdav.inc.php
index cee0961fff..e008275d9d 100644
--- a/addressbook/inc/class.addressbook_groupdav.inc.php
+++ b/addressbook/inc/class.addressbook_groupdav.inc.php
@@ -338,6 +338,8 @@ class addressbook_groupdav extends groupdav_handler
 					break;
 				case 'limit':
 					break;
+				case 'href':
+					break;	// from addressbook-multiget, handled below
 				default:
 					error_log(__METHOD__."(...) unknown xml: options[other]=".array2string($options['other']));
 					break;