diff --git a/htdocs/product/stats/pre.inc.php b/htdocs/product/stats/pre.inc.php
index 0770549c100..26e59ac4cd6 100644
--- a/htdocs/product/stats/pre.inc.php
+++ b/htdocs/product/stats/pre.inc.php
@@ -1,5 +1,5 @@
 <?PHP
-/* Copyright (C) 2003 Rodolphe Quiedeville <rodolphe@quiedeville.org>
+/* Copyright (C) 2003-2004 Rodolphe Quiedeville <rodolphe@quiedeville.org>
  *
  * 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
@@ -20,6 +20,7 @@
  *
  */
 require("../../main.inc.php");
+require(DOL_DOCUMENT_ROOT."/bargraph.class.php");
 
 function llxHeader($head = "", $urlp = "")
 {