diff --git a/classes/bulkenrol_form.php b/classes/bulkenrol_form.php
index 069f10f..bfed7a5 100644
--- a/classes/bulkenrol_form.php
+++ b/classes/bulkenrol_form.php
@@ -139,7 +139,7 @@ private function get_fieldname($fieldoption) {
         $fieldinfo = explode("_", $fieldoption, 2);
         switch ($fieldinfo[0]) {
             case "u":
-                return $fieldinfo[1];
+                return get_string($fieldinfo[1]);
             case "c":
                 return $DB->get_field('user_info_field', 'name', array("id" => intval($fieldinfo[1])));
             default: