diff --git a/main/exercice/Hpdownload.php b/main/exercice/Hpdownload.php
index 2118567c43..cd04cca715 100644
--- a/main/exercice/Hpdownload.php
+++ b/main/exercice/Hpdownload.php
@@ -22,7 +22,7 @@
 *	This script shows the list of exercises for administrators and students.
 *	@package dokeos.exercise
 * 	@author Istvan Mandak
-* 	@version $Id: Hpdownload.php 20555 2009-05-12 14:01:40Z juliomontoya $
+* 	@version $Id: Hpdownload.php 21122 2009-05-31 00:10:22Z cfasanando $
 */
 
 
@@ -35,7 +35,7 @@ include(api_get_path(LIBRARY_PATH)."events.lib.inc.php");
 
 $tbl_document = Database::get_course_table(TABLE_DOCUMENT);
 
-$doc_url=str_replace(array('../','\\..','\\0'),array('','',''),urldecode($_GET['doc_url']));
+$doc_url=str_replace(array('../','\\..','\\0','..\\'),array('','','',''),urldecode($_GET['doc_url']));
 $filename=basename($doc_url);
 
 // launch event