diff --git a/htdocs/compta/stats/byratecountry.php b/htdocs/compta/stats/byratecountry.php
index e2047d00738..fec3d966309 100644
--- a/htdocs/compta/stats/byratecountry.php
+++ b/htdocs/compta/stats/byratecountry.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2018       Laurent Destailleur     <eldy@users.sourceforge.net>
- * Copyright (C) 2018       Frédéric France         <frederic.france@netlogic.fr>
+ * Copyright (C) 2018-2021  Frédéric France         <frederic.france@netlogic.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -114,7 +114,7 @@ if (empty($min)) {
 
 // Define modetax (0 or 1)
 // 0=normal, 1=option vat for services is on debit, 2=option on payments for products
-$modetax = $conf->global->TAX_MODE;
+$modetax = !empty($conf->global->TAX_MODE) ? $conf->global->TAX_MODE : 0;
 if (GETPOSTISSET("modetax")) {
 	$modetax = GETPOST("modetax", 'int');
 }