diff --git a/htdocs/compta/paiement.php b/htdocs/compta/paiement.php
index 4fb008198fb..14b2a5ffbe5 100644
--- a/htdocs/compta/paiement.php
+++ b/htdocs/compta/paiement.php
@@ -2,6 +2,7 @@
 /* Copyright (C) 2001-2006 Rodolphe Quiedeville  <rodolphe@quiedeville.org>
  * Copyright (C) 2004-2006 Laurent Destailleur   <eldy@users.sourceforge.net>
  * Copyright (C) 2005      Marc Barilley / Ocebo <marc@ocebo.com>
+ * Copyright (C) 2007      Franky Van Liedekerke <franky.van.liedekerke@telenet.be>
  *
  * 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
@@ -101,7 +102,7 @@ if ($_POST['action'] == 'add_paiement' || $_POST['action'] == 'confirm_paiement'
 	}
     }
   
-  if ($totalpaiement <= 0)
+  if ($totalpaiement == 0)
     {
       $fiche_erreur_message = '<div class="error">'.$langs->transnoentities('ErrorFieldRequired',$langs->trans('Amount')).'</div>';
       $error++;