diff --git a/htdocs/admin/facture.php b/htdocs/admin/facture.php
index 38968ab9cd5..c7a3f04a403 100644
--- a/htdocs/admin/facture.php
+++ b/htdocs/admin/facture.php
@@ -313,6 +313,7 @@ foreach ($dirmodels as $reldir)
                         $filebis = $file."/".$file.".modules.php";
                         $classname = "mod_facture_".$file;
                     }
+                    $classname = preg_replace('/\-.*$/','',$classname);
                     if (! class_exists($classname) && is_readable($dir.$filebis) && (preg_match('/mod_/',$filebis) || preg_match('/mod_/',$classname)) && substr($filebis, dol_strlen($filebis)-3, 3) == 'php')
                     {
                         // Chargement de la classe de numerotation
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index b863d80e91c..06e90c57fa1 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -2522,6 +2522,7 @@ class Facture extends CommonInvoice
 		{
 			$file = $conf->global->FACTURE_ADDON."/".$conf->global->FACTURE_ADDON.".modules.php";
 			$classname = "mod_facture_".$conf->global->FACTURE_ADDON;
+			$classname = preg_replace('/\-.*$/','',$classname);
 			// Include file with class
 			foreach ($conf->file->dol_document_root as $dirroot)
 			{
diff --git a/htdocs/core/modules/facture/mod_facture_mars.php b/htdocs/core/modules/facture/mod_facture_mars-es_ES.php
similarity index 97%
rename from htdocs/core/modules/facture/mod_facture_mars.php
rename to htdocs/core/modules/facture/mod_facture_mars-es_ES.php
index 28a32868d39..5430ed539ba 100644
--- a/htdocs/core/modules/facture/mod_facture_mars.php
+++ b/htdocs/core/modules/facture/mod_facture_mars-es_ES.php
@@ -1,7 +1,7 @@
 <?php
 /* Copyright (C) 2005-2008 Laurent Destailleur  <eldy@users.sourceforge.net>
  * Copyright (C) 2005-2009 Regis Houssin        <regis.houssin@capnetworks.com>
- * Copyright (C) 2013		Juanjo Menent		<jmenent@2byte.es>
+ * Copyright (C) 2013      Juanjo Menent		<jmenent@2byte.es>
  *
  * 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
@@ -25,8 +25,8 @@
  */
 require_once DOL_DOCUMENT_ROOT .'/core/modules/facture/modules_facture.php';
 
-/**	    \class      mod_facture_mars
- *		\brief      Classe du modele de numerotation de reference de facture Mars
+/**
+ * 	Classe du modele de numerotation de reference de facture Mars
  */
 class mod_facture_mars extends ModeleNumRefFactures
 {