diff --git a/main/inc/lib/main_api.lib.php b/main/inc/lib/main_api.lib.php
index 83ac104a1e..059e9e508d 100644
--- a/main/inc/lib/main_api.lib.php
+++ b/main/inc/lib/main_api.lib.php
@@ -863,7 +863,7 @@ function api_valid_email($address) {
  * @author Roan Embrechts
  */
 function api_protect_course_script($print_headers = false, $allow_session_admins = false, $allow_drh = false) {
-    global $is_allowed_in_course;
+    $is_allowed_in_course = api_is_allowed_in_course();
     $is_visible = false;
 
     if (api_is_drh()) {