diff --git a/htdocs/compta/accounting-files.php b/htdocs/compta/accounting-files.php
index 4eb368e72df..b8e10e7d0e3 100644
--- a/htdocs/compta/accounting-files.php
+++ b/htdocs/compta/accounting-files.php
@@ -24,7 +24,7 @@
  */
 
 if ($_GET['action'] == 'dl' || $_POST['action'] == 'dl') {	// To not replace token when downloading file
-	if (! defined('NOTOKENRENEWAL'))           define('NOTOKENRENEWAL','1');
+	if (! defined('NOTOKENRENEWAL'))           define('NOTOKENRENEWAL', '1');
 }
 
 require '../main.inc.php';