diff --git a/comment/classes/privacy/provider.php b/comment/classes/privacy/provider.php
index 0a267887ea043..51c3a1e7dd5eb 100644
--- a/comment/classes/privacy/provider.php
+++ b/comment/classes/privacy/provider.php
@@ -29,6 +29,8 @@
 use \core_privacy\local\metadata\collection;
 use \core_privacy\local\request\transform;
 
+require_once($CFG->dirroot . '/comment/lib.php');
+
 /**
  * Privacy class for requesting user data.
  *