diff --git a/course/format/scorm/lib.php b/course/format/scorm/lib.php
index 2bc6b07fd69..0bb518d80c1 100644
--- a/course/format/scorm/lib.php
+++ b/course/format/scorm/lib.php
@@ -23,6 +23,9 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+defined('MOODLE_INTERNAL') || die();
+require_once($CFG->dirroot. '/course/format/lib.php');
+
 /**
  * Main class for the Scorm course format
  *
diff --git a/course/format/social/lib.php b/course/format/social/lib.php
index e6452013ffe..3c84a152822 100644
--- a/course/format/social/lib.php
+++ b/course/format/social/lib.php
@@ -23,6 +23,9 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+defined('MOODLE_INTERNAL') || die();
+require_once($CFG->dirroot. '/course/format/lib.php');
+
 /**
  * Main class for the Social course format
  *
diff --git a/course/format/topics/lib.php b/course/format/topics/lib.php
index b23cd8c0149..0f783e1063b 100644
--- a/course/format/topics/lib.php
+++ b/course/format/topics/lib.php
@@ -23,6 +23,9 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+defined('MOODLE_INTERNAL') || die();
+require_once($CFG->dirroot. '/course/format/lib.php');
+
 /**
  * Main class for the Topics course format
  *
diff --git a/course/format/weeks/lib.php b/course/format/weeks/lib.php
index 7c2dd9ba4f7..ba1f54f9c32 100644
--- a/course/format/weeks/lib.php
+++ b/course/format/weeks/lib.php
@@ -23,6 +23,9 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+defined('MOODLE_INTERNAL') || die();
+require_once($CFG->dirroot. '/course/format/lib.php');
+
 /**
  * Main class for the Weeks course format
  *