diff --git a/classes/helper.php b/classes/helper.php
new file mode 100644
index 0000000..1b089ce
--- /dev/null
+++ b/classes/helper.php
@@ -0,0 +1,64 @@
+<?php
+// This file is part of the customcert module for Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Provides helper functionality.
+ *
+ * @package    mod_customcert
+ * @copyright  2021 Mark Nelson <mdjnelson@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_customcert;
+
+use core_user\fields;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Class helper.
+ *
+ * Helper functionality for this module.
+ *
+ * @package    mod_customcert
+ * @copyright  2021 Mark Nelson <mdjnelson@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class helper {
+
+    /**
+     * A centralised location for the all name fields.
+     *
+     * Returns a sql string snippet.
+     *
+     * @param string $tableprefix table query prefix to use in front of each field.
+     * @return string All name fields.
+     */
+    public static function get_all_user_name_fields($tableprefix = '') {
+        $alternatenames = [];
+        foreach (fields::get_name_fields() as $field) {
+            $alternatenames[$field] = $field;
+        }
+
+        if ($tableprefix) {
+            foreach ($alternatenames as $key => $altname) {
+                $alternatenames[$key] = $tableprefix . '.' . $altname;
+            }
+        }
+
+        return implode(',', $alternatenames);
+    }
+}
\ No newline at end of file
diff --git a/classes/task/email_certificate_task.php b/classes/task/email_certificate_task.php
index fb27769..1c5878a 100644
--- a/classes/task/email_certificate_task.php
+++ b/classes/task/email_certificate_task.php
@@ -23,6 +23,8 @@
  */
 namespace mod_customcert\task;
 
+use mod_customcert\helper;
+
 defined('MOODLE_INTERNAL') || die();
 
 /**
@@ -102,7 +104,7 @@ class email_certificate_task extends \core\task\scheduled_task {
             $info->certificatename = $certificatename;
 
             // Get a list of all the issues.
-            $userfields = get_all_user_name_fields(true, 'u');
+            $userfields = helper::get_all_user_name_fields('u');
             $sql = "SELECT u.id, u.username, $userfields, u.email, ci.id as issueid, ci.emailed
                       FROM {customcert_issues} ci
                       JOIN {user} u
diff --git a/verify_certificate.php b/verify_certificate.php
index 9ed0018..dead636 100644
--- a/verify_certificate.php
+++ b/verify_certificate.php
@@ -93,7 +93,7 @@ if ($code) {
     $result->issues = array();
 
     // Ok, now check if the code is valid.
-    $userfields = get_all_user_name_fields(true, 'u');
+    $userfields = \mod_customcert\helper::get_all_user_name_fields('u');
     $sql = "SELECT ci.id, u.id as userid, $userfields, co.id as courseid,
                    co.fullname as coursefullname, c.id as certificateid,
                    c.name as certificatename, c.verifyany