diff --git a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
index 6f50bd76d5e65..5be6f70723b5e 100644
--- a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
@@ -98,7 +98,7 @@ public function publish(string $body, array $headers = array()): void
             $this->setup();
         }
 
-        $this->exchange()->publish($body, null, AMQP_NOPARAM, array('headers' => $headers));
+        $this->exchange()->publish($body, $this->queueConfiguration['routing_key'] ?? null, AMQP_NOPARAM, array('headers' => $headers));
     }
 
     /**