diff --git a/mod/data/locallib.php b/mod/data/locallib.php
index 807999ba0a0..d8f8ab90765 100644
--- a/mod/data/locallib.php
+++ b/mod/data/locallib.php
@@ -22,6 +22,7 @@
  */
 
 require_once($CFG->dirroot . '/mod/data/lib.php');
+require_once($CFG->libdir . '/portfolio/caller.php');
 
 /**
  * The class to handle entry exports of a database module