diff --git a/htdocs/admin/pdf.php b/htdocs/admin/pdf.php
index 41ed8e25ff2..80f057af26c 100644
--- a/htdocs/admin/pdf.php
+++ b/htdocs/admin/pdf.php
@@ -166,6 +166,10 @@ if ($action == 'update') {
 		dolibarr_set_const($db, "PDF_SHOW_LINK_TO_ONLINE_PAYMENT", GETPOST('PDF_SHOW_LINK_TO_ONLINE_PAYMENT', 'alpha'), 'chaine', 0, '', $conf->entity);
 	}
 
+	if (GETPOSTISSET('PDF_INCLUDE_ALIAS_IN_THIRDPARTY_NAME')) {
+		dolibarr_set_const($db, "PDF_INCLUDE_ALIAS_IN_THIRDPARTY_NAME", GETPOST('PDF_INCLUDE_ALIAS_IN_THIRDPARTY_NAME', 'alpha'), 'chaine', 0, '', $conf->entity);
+	}
+
 	setEventMessages($langs->trans("SetupSaved"), null, 'mesgs');
 
 	header("Location: ".$_SERVER["PHP_SELF"]."?mainmenu=home&leftmenu=setup");