--- a/include/common-template.inc.php
+++ b/include/common-template.inc.php
@@ -175,7 +175,7 @@
';
if ($GTFSREnabled) {
$overrides = getServiceOverride();
- if ($overrides['service_id']) {
+ if (isset($overrides['service_id'])) {
if ($overrides['service_id'] == "noservice") {
echo '
';