diff --git a/htdocs/master.inc.php b/htdocs/master.inc.php
index 12088239e9a..212e6f5db83 100644
--- a/htdocs/master.inc.php
+++ b/htdocs/master.inc.php
@@ -1,4 +1,4 @@
-<?PHP
+<?php
 /* Copyright (C) 2002-2007 Rodolphe Quiedeville <rodolphe@quiedeville.org>
  * Copyright (C) 2003      Xavier Dutoit        <doli@sydesy.com>
  * Copyright (C) 2004-2012 Laurent Destailleur  <eldy@users.sourceforge.net>