1 files changed, 3 insertions, 0 deletions
diff --git a/db/upgrade.php b/db/upgrade.php
index 6ddf1db..48cc159 100644
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -21,6 +21,9 @@
  * @copyright  Roger Moore
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
+
+defined('MOODLE_INTERNAL') || die();
+
 function xmldb_qtype_algebra_upgrade($oldversion=0) {
 
     global $CFG, $THEME, $DB;