diff --git a/htdocs/datapolicy/class/datapolicycron.class.php b/htdocs/datapolicy/class/datapolicycron.class.php
index 409df1362e9..8e3cfe10874 100644
--- a/htdocs/datapolicy/class/datapolicycron.class.php
+++ b/htdocs/datapolicy/class/datapolicycron.class.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2018       Nicolas ZABOURI     <info@inovea-conseil.com>
- * Copyright (C) 2018       Frédéric France     <frederic.france@netlogic.fr>
+ * Copyright (C) 2018-2020  Frédéric France     <frederic.france@netlogic.fr>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -482,7 +482,7 @@ class DataPolicyCron
 
                     while ($i < $num && !$error)
                     {
-                        $obj = $db->fetch_object($resql);
+                        $obj = $this->db->fetch_object($resql);
 
                         $object->fetch($obj->rowid);
                         $object->id = $obj->rowid;