diff --git a/htdocs/comm/card.php b/htdocs/comm/card.php
index 589559ea426..95ba96abd74 100644
--- a/htdocs/comm/card.php
+++ b/htdocs/comm/card.php
@@ -580,9 +580,9 @@ if ($object->id > 0) {
 		print '</tr></table>';
 		print '</td><td>';
 		if ($action == 'edittransportmode') {
-			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, $object->fk_transport_mode, 'fk_transport_mode', 1);
+			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, (!empty($object->fk_transport_mode) ? $object->fk_transport_mode : ''), 'fk_transport_mode', 1);
 		} else {
-			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, $object->fk_transport_mode, 'none');
+			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, (!empty($object->fk_transport_mode) ? $object->fk_transport_mode : ''), 'none');
 		}
 		print "</td>";
 		print '</tr>';