diff --git a/booking.variety_admin.inc b/booking.variety_admin.inc
index 031f85c..d276fe9 100644
--- a/booking.variety_admin.inc
+++ b/booking.variety_admin.inc
@@ -511,7 +511,8 @@ function booking_varietysessions_csv_report($timeslot_id) {
   global $event;
   $data = array();  
 
-  include_once("./libraries/xlsxwriter.class.php");
+  //include_once("./libraries/xlsxwriter.class.php");
+  module_load_include('php', 'booking', 'libraries/xlsxwriter.class');
   //ini_set('display_errors', 0);
   //ini_set('log_errors', 1);
   //error_reporting(E_ALL & ~E_NOTICE);