diff --git a/main/document/slideshow.php b/main/document/slideshow.php
index 4f7b104a29..75bf519a02 100644
--- a/main/document/slideshow.php
+++ b/main/document/slideshow.php
@@ -1,4 +1,4 @@
-<?php // $Id: slideshow.php 20785 2009-05-18 15:05:03Z juliomontoya $
+<?php // $Id: slideshow.php 21107 2009-05-30 16:27:09Z iflorespaz $
 
 /*
 ==============================================================================
@@ -46,7 +46,7 @@ January 2008
 
 // name of the language file that needs to be included 
 $language_file = array ('slideshow', 'document');
-include ('../inc/global.inc.php');
+require_once '../inc/global.inc.php';
 $noPHP_SELF = true;
 $path = Security::remove_XSS($_GET['curdirpath']);
 $pathurl = urlencode($path);
diff --git a/main/document/slideshowoptions.php b/main/document/slideshowoptions.php
index b7c22298c0..a8ada88fd7 100644
--- a/main/document/slideshowoptions.php
+++ b/main/document/slideshowoptions.php
@@ -1,4 +1,4 @@
-<?php // $Id: slideshowoptions.php 20812 2009-05-18 21:47:23Z aportugal $ 
+<?php // $Id: slideshowoptions.php 21107 2009-05-30 16:27:09Z iflorespaz $ 
 /*
 ==============================================================================
 	Dokeos - elearning and course management software
@@ -62,7 +62,7 @@ Description:
 // name of the language file that needs to be included 
 $language_file = array ('slideshow', 'document');
 
-include('../inc/global.inc.php');
+require_once '../inc/global.inc.php';
 
 $path = Security::remove_XSS($_GET['curdirpath']);
 $pathurl = urlencode($path);