diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index b73307277c8..1d4dd3a45a9 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -15,6 +15,7 @@
  * Copyright (C) 2013      Cedric Gross          <c.gross@kreiz-it.fr>
  * Copyright (C) 2013      Florian Henry		  	<florian.henry@open-concept.pro>
  * Copyright (C) 2016      Ferran Marcet        <fmarcet@2byte.es>
+ * Copyright (C) 2018      Nicolas ZABOURI        <info@inovea-conseil.com>
  *
  * 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
@@ -3979,9 +3980,10 @@ class Facture extends CommonInvoice
 	 *  @param  int			$hidedetails    Hide details of lines
 	 *  @param  int			$hidedesc       Hide description
 	 *  @param  int			$hideref        Hide ref
+	 * @param   null|array  $moreparams     Array to provide more information
 	 *	@return int        					<0 if KO, >0 if OK
 	 */
-	public function generateDocument($modele, $outputlangs, $hidedetails=0, $hidedesc=0, $hideref=0)
+	public function generateDocument($modele, $outputlangs, $hidedetails=0, $hidedesc=0, $hideref=0, $moreparams=null)
 	{
 		global $conf,$langs;
 
@@ -4000,7 +4002,7 @@ class Facture extends CommonInvoice
 
 		$modelpath = "core/modules/facture/doc/";
 
-		return $this->commonGenerateDocument($modelpath, $modele, $outputlangs, $hidedetails, $hidedesc, $hideref);
+		return $this->commonGenerateDocument($modelpath, $modele, $outputlangs, $hidedetails, $hidedesc, $hideref, $moreparams);
 	}
 
 	/**