diff --git a/src/includes/class/class.LSattr_ldap_shadowExpire.php b/src/includes/class/class.LSattr_ldap_shadowExpire.php
index fd3f91f9..7b822bf8 100644
--- a/src/includes/class/class.LSattr_ldap_shadowExpire.php
+++ b/src/includes/class/class.LSattr_ldap_shadowExpire.php
@@ -52,7 +52,8 @@ class LSattr_ldap_shadowExpire extends LSattr_ldap {
   public function getUpdateData($data) {
     $ret=array();
     foreach(ensureIsArray($data) as $val)
-      $ret[] = strval(round(intval($val) / 86400));
+      $ret[] = strval(floor(intval($val) / 86400));
+    self :: log_debug($this."->getUpdateData(): input data=".varDump($data)." / update data=".varDump($ret));
     return $ret;
   }