diff --git a/htdocs/product/canvas/product.livrecontrat.class.php b/htdocs/product/canvas/product.livrecontrat.class.php
index b4adfda73a8..d56b7682e04 100644
--- a/htdocs/product/canvas/product.livrecontrat.class.php
+++ b/htdocs/product/canvas/product.livrecontrat.class.php
@@ -1,6 +1,6 @@
 <?php
-/* Copyright (C) 2006 Rodolphe Quiedeville <rodolphe@quiedeville.org>
- * Copyright (C) 2006 Auguria SARL <info@auguria.org>
+/* Copyright (C) 2006-2007 Rodolphe Quiedeville <rodolphe@quiedeville.org>
+ * Copyright (C) 2006-2007 Auguria SARL <info@auguria.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
@@ -155,7 +155,7 @@ class ProductLivreContrat extends Product
   {
     dolibarr_syslog("ProductLivreContrat::UpdateCanvas");
 
-    $taux   = ereg_replace(',','.',abs(trim($datas["contrat_taux"])));
+    $taux   = ereg_replace(',','.',trim($datas["contrat_taux"]));
     $quant  = trim($datas["contrat_quant"]);
     $duree  = trim($datas["contrat_duree"]);