diff --git a/src/Symfony/Component/Messenger/EventListener/StopWorkerOnSignalsListener.php b/src/Symfony/Component/Messenger/EventListener/StopWorkerOnSignalsListener.php
index e49e80fe295a2..368c5c5b61862 100644
--- a/src/Symfony/Component/Messenger/EventListener/StopWorkerOnSignalsListener.php
+++ b/src/Symfony/Component/Messenger/EventListener/StopWorkerOnSignalsListener.php
@@ -29,7 +29,7 @@ public function __construct(array $signals = null, LoggerInterface $logger = nul
         if (null === $signals && \defined('SIGTERM')) {
             $signals = [SIGTERM, SIGINT];
         }
-        $this->signals = $signals;
+        $this->signals = $signals ?? [];
         $this->logger = $logger;
     }