diff --git a/setup/setup.inc.php b/setup/setup.inc.php
index 44b2ad4d593f5521b66ad170c9e801a817cf74f1..c2b404c74a68aeb346e091c4cd900e141464a135 100644
--- a/setup/setup.inc.php
+++ b/setup/setup.inc.php
@@ -53,6 +53,7 @@ endif;
 
 #required files
 require_once(INCLUDE_DIR.'class.validator.php');
+require_once(INCLUDE_DIR.'class.passwd.php');
 require_once(INCLUDE_DIR.'class.format.php');
 require_once(INCLUDE_DIR.'class.misc.php');
 require_once(INCLUDE_DIR.'mysql.php');