diff --git a/lib/classes/component.php b/lib/classes/component.php
index 6b069bf70f5..e82f62a446a 100644
--- a/lib/classes/component.php
+++ b/lib/classes/component.php
@@ -22,6 +22,8 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+defined('MOODLE_INTERNAL') || die();
+
 /**
  * Collection of components related methods.
  */