diff --git a/inc/inc.ClassSettings.php b/inc/inc.ClassSettings.php
index 0dba722d8..cb60e5a04 100644
--- a/inc/inc.ClassSettings.php
+++ b/inc/inc.ClassSettings.php
@@ -346,6 +346,7 @@ class Settings { /* {{{ */
 	// below basedn and the search term 'uid=<username>' or 'sAMAccountName=<username>'
 	// if set the search will be (&(cn=<username>)<filter>)
 	var $_ldapFilter = "";
+	var $_usersConnectors = array();
 	var $_converters = array(); // list of commands used to convert files to text for Indexer
 	var $_extensions = array(); // configuration for extensions