diff --git a/main/admin/index.php b/main/admin/index.php
index 7be7755479..04b8bee7c2 100644
--- a/main/admin/index.php
+++ b/main/admin/index.php
@@ -1,4 +1,4 @@
-<?php // $Id: index.php 15605 2008-06-19 22:18:32Z yannoo $
+<?php // $Id: index.php 16243 2008-09-05 00:07:26Z yannoo $
 /*
 ==============================================================================
 	Dokeos - elearning and course management software
@@ -114,7 +114,11 @@ $keyword_url = Security::remove_XSS((empty($_GET['keyword'])?'':$_GET['keyword']
 <li><a href="course_import.php"><?php echo get_lang('AddCourse').' CSV'; ?></a></li>
 <!--<li><a href="course_virtual.php"><?php //echo get_lang('AdminManageVirtualCourses') ?></a></li>-->
 <li><a href="course_category.php"><?php echo get_lang("AdminCategories"); ?></a></li>
-<li><a href="subscribe_class2course.php"><?php echo get_lang('AddClassesToACourse'); ?></a></li>
+<?php
+if ( api_get_setting('use_session_mode') !== 'true' ) {
+    echo '<li><a href="subscribe_class2course.php">'.get_lang('AddClassesToACourse').'</a></li>';
+}
+?>
 <li><a href="subscribe_user2course.php"><?php echo get_lang('AddUsersToACourse'); ?></a></li>
 <li><a href="course_user_import.php"><?php echo get_lang('AddUsersToACourse').' CSV'; ?></a></li>
 </ul>