diff --git a/cron.php b/cron.php
index 8c0311b53a777..8cd97258003fa 100644
--- a/cron.php
+++ b/cron.php
@@ -23,7 +23,7 @@
 try {
 	require_once __DIR__ . '/lib/base.php';
 
-	if ($argv[1] === '-h' || $argv[1] === '--help') {
+	if (isset($argv[1]) && ($argv[1] === '-h' || $argv[1] === '--help')) {
 		echo 'Description:
   Run the background job routine