From 34b9890110b6741426fffae62f1114d589fd9467 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20FRANCE?=
 <frederic34@users.noreply.github.com>
Date: Fri, 22 Oct 2021 15:29:38 +0200
Subject: [PATCH] fix warning

---
 htdocs/eventorganization/conferenceorbooth_list.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/htdocs/eventorganization/conferenceorbooth_list.php b/htdocs/eventorganization/conferenceorbooth_list.php
index c02306ba6be..a423b532106 100644
--- a/htdocs/eventorganization/conferenceorbooth_list.php
+++ b/htdocs/eventorganization/conferenceorbooth_list.php
@@ -282,7 +282,7 @@ if ($projectid > 0) {
 	// Title
 	$morehtmlref .= $project->title;
 	// Thirdparty
-	if ($project->thirdparty->id > 0) {
+	if (isset($project->thirdparty->id) && $project->thirdparty->id > 0) {
 		$morehtmlref .= '<br>'.$langs->trans('ThirdParty').' : '.$project->thirdparty->getNomUrl(1, 'project');
 	}
 	$morehtmlref .= '</div>';