diff --git a/admin/export.php b/admin/export.php
index 1ac0440b..40abc18e 100644
--- a/admin/export.php
+++ b/admin/export.php
@@ -37,6 +37,7 @@ require(HESK_PATH . 'inc/common.inc.php');
 require(HESK_PATH . 'inc/admin_functions.inc.php');
 require(HESK_PATH . 'inc/reporting_functions.inc.php');
 require(HESK_PATH . 'inc/status_functions.inc.php');
+require(HESK_PATH . 'inc/mail_functions.inc.php');
 hesk_load_database_functions();
 
 hesk_session_start();