From d6f6097f4ae19673e3bbe2bf1e1eabcf17c143f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20FRANCE?=
 <frederic34@users.noreply.github.com>
Date: Mon, 15 Mar 2021 11:54:16 +0100
Subject: [PATCH] fix php8 warning

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

diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index cc744f9eb56..0975bfbd7ef 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -3686,7 +3686,7 @@ class Commande extends CommonOrder
 				$label .= ' '.$this->getLibStatut(5);
 			}
 			$label .= '<br><b>'.$langs->trans('Ref').':</b> '.$this->ref;
-			$label .= '<br><b>'.$langs->trans('RefCustomer').':</b> '.($this->ref_customer ? $this->ref_customer : $this->ref_client);
+			$label .= '<br><b>'.$langs->trans('RefCustomer').':</b> '.(empty($this->ref_customer) ? (empty($this->ref_client) ? '' : $this-ref_client) : $this->ref_customer);
 			if (!empty($this->total_ht)) {
 				$label .= '<br><b>'.$langs->trans('AmountHT').':</b> '.price($this->total_ht, 0, $langs, 0, -1, -1, $conf->currency);
 			}