diff --git a/reportbuilder/classes/local/helpers/schedule.php b/reportbuilder/classes/local/helpers/schedule.php
index 9dcfd65c853..a1335ee2a81 100644
--- a/reportbuilder/classes/local/helpers/schedule.php
+++ b/reportbuilder/classes/local/helpers/schedule.php
@@ -151,6 +151,9 @@ class schedule {
      * @return stored_file
      */
     public static function get_schedule_report_file(model $schedule): stored_file {
+        global $CFG;
+        require_once("{$CFG->libdir}/filelib.php");
+
         $table = custom_report_table_view::create($schedule->get('reportid'));
 
         $table->setup();