diff --git a/addressbook/inc/class.addressbook_ldap.inc.php b/addressbook/inc/class.addressbook_ldap.inc.php
index 51132c856d..052658bf88 100644
--- a/addressbook/inc/class.addressbook_ldap.inc.php
+++ b/addressbook/inc/class.addressbook_ldap.inc.php
@@ -719,7 +719,7 @@ class addressbook_ldap
 		{
 			list($start,$offset) = $start;
 		}
-		if(is_numeric($start) && is_numeric($offset))
+		if(is_numeric($start) && is_numeric($offset) && $offset >= 0)
 		{
 			return array_slice($rows, $start, $offset);
 		}