diff --git a/htdocs/fichinter/card-rec.php b/htdocs/fichinter/card-rec.php
index 775f83ef500..7b944869b6a 100644
--- a/htdocs/fichinter/card-rec.php
+++ b/htdocs/fichinter/card-rec.php
@@ -8,7 +8,7 @@
  * Copyright (C) 2012       Cedric Salvador         <csalvador@gpcsolutions.fr>
  * Copyright (C) 2015       Alexandre Spangaro      <aspangaro@open-dsi.fr>
  * Copyright (C) 2016-2018  Charlie Benke           <charlie@patas-monkey.com>
- * Copyright (C) 2018-2019  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
@@ -68,6 +68,8 @@ if ($page == -1) {
 $limit = GETPOST('limit', 'int') ?GETPOST('limit', 'int') : $conf->liste_limit;
 $offset = $limit * $page;
 
+$sortorder = GETPOST('sortorder', 'alpha');
+$sortfield = GETPOST('sortfield', 'aZ09comma');
 if ($sortorder == "") {
 	$sortorder = "DESC";
 }
@@ -102,13 +104,13 @@ $arrayfields = array(
 
 // Create predefined intervention
 if ($action == 'add') {
-	if (!GETPOST('titre')) {
+	if (!GETPOSTISSET('titre')) {
 		setEventMessages($langs->transnoentities("ErrorFieldRequired", $langs->trans("Title")), null, 'errors');
 		$action = "create";
 		$error++;
 	}
 
-	if (!GETPOST('socid')) {
+	if (!GETPOSTISSET('socid')) {
 		setEventMessages($langs->transnoentities("ErrorFieldRequired", $langs->trans("Customer")), null, 'errors');
 		$action = "create";
 		$error++;