diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php b/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
index 0cab173823c..b71ce5860f0 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
@@ -4,6 +4,7 @@
  * Copyright (C) 2013       Olivier Geffroy         <jeff@jeffinfo.com>
  * Copyright (C) 2013       Florian Henry           <florian.henry@open-concept.pro>
  * Copyright (C) 2013-2018  Alexandre Spangaro      <aspangaro@zendsi.com>
+ * Copyright (C) 2018       Frédéric France         <frederic.france@netlogic.fr>
  *
  * 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
@@ -21,8 +22,8 @@
  */
 
 /**
- * \file        accountancy/bookkeeping/thirdparty_lettering_customer.php
- * \ingroup     Advanced accountancy
+ * \file        htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
+ * \ingroup     accountancy
  * \brief       Tab to manage customer lettering
  */
 require '../../main.inc.php';
@@ -77,7 +78,7 @@ if (GETPOST('button_removefilter_x', 'alpha') || GETPOST('button_removefilter.x'
 $socid = GETPOST("socid", 'int');
 // if ($user->societe_id) $socid=$user->societe_id;
 
-$lettering = new lettering($db);
+$lettering = new Lettering($db);
 $object = new Societe($db);
 $object->id = $socid;
 $result = $object->fetch($socid);
diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php b/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
index 659643260f9..eaeefcca8a8 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
@@ -4,6 +4,7 @@
  * Copyright (C) 2013       Olivier Geffroy         <jeff@jeffinfo.com>
  * Copyright (C) 2013       Florian Henry           <florian.henry@open-concept.pro>
  * Copyright (C) 2013-2018  Alexandre Spangaro      <aspangaro@zendsi.com>
+ * Copyright (C) 2018       Frédéric France         <frederic.france@netlogic.fr>
  *
  * 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
@@ -21,8 +22,8 @@
  */
 
 /**
- * \file        accountancy/bookkeeping/thirdparty_lettering_supplier.php
- * \ingroup     Advanced accountancy
+ * \file        htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
+ * \ingroup     accountancy
  * \brief       Tab to setup lettering
  */
 require '../../main.inc.php';
@@ -79,7 +80,7 @@ if (GETPOST('button_removefilter_x','alpha') || GETPOST('button_removefilter.x',
 $socid = GETPOST("socid", 'int');
 // if ($user->societe_id) $socid=$user->societe_id;
 
-$lettering = new lettering($db);
+$lettering = new Lettering($db);
 $object = new Societe($db);
 $object->id = $socid;
 $result = $object->fetch($socid);
diff --git a/htdocs/accountancy/class/lettering.class.php b/htdocs/accountancy/class/lettering.class.php
index b6eeba24c01..db943029acc 100644
--- a/htdocs/accountancy/class/lettering.class.php
+++ b/htdocs/accountancy/class/lettering.class.php
@@ -2,6 +2,7 @@
 /* Copyright (C) 2004-2005  Rodolphe Quiedeville    <rodolphe@quiedeville.org>
  * Copyright (C) 2013       Olivier Geffroy         <jeff@jeffinfo.com>
  * Copyright (C) 2013-2018  Alexandre Spangaro      <aspangaro@zendsi.com>
+ * Copyright (C) 2018       Frédéric France         <frederic.france@netlogic.fr>
  *
  * 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
@@ -18,8 +19,8 @@
  */
 
 /**
- * \file        accountancy/class/bookkeeping.class.php
- * \ingroup     Advanced accountancy
+ * \file        htdocs/accountancy/class/lettering.class.php
+ * \ingroup     accountancy
  * \brief       File of class for lettering
  */
 include_once DOL_DOCUMENT_ROOT . "/accountancy/class/bookkeeping.class.php";
@@ -27,9 +28,9 @@ include_once DOL_DOCUMENT_ROOT . "/societe/class/societe.class.php";
 include_once DOL_DOCUMENT_ROOT . "/core/lib/date.lib.php";
 
 /**
- * Class lettering
+ * Class Lettering
  */
-class lettering extends BookKeeping
+class Lettering extends BookKeeping
 {
 	/**
 	 * letteringThirdparty