diff --git a/htdocs/core/lib/ticket.lib.php b/htdocs/core/lib/ticket.lib.php
index 41e783b7597..609dbd9926d 100644
--- a/htdocs/core/lib/ticket.lib.php
+++ b/htdocs/core/lib/ticket.lib.php
@@ -1,6 +1,7 @@
 <?php
 /* Copyright (C) 2013-2018	Jean-François FERRY	<hello@librethic.io>
  * Copyright (C) 2016		Christophe Battarel	<christophe@altairis.fr>
+ * Copyright (C) 2019       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
@@ -180,10 +181,10 @@ function showDirectPublicLink($object)
 }
 
 /**
- *     Generate a random id
+ *  Generate a random id
  *
- *    @param  string $car Char to generate key
- *     @return void
+ *  @param  int $car Length of string to generate key
+ *  @return string
  */
 function generate_random_id($car = 16)
 {