diff --git a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
index 6f6b8b22a6db5..ecd72a7be9d90 100644
--- a/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/AmqpExt/Connection.php
@@ -430,6 +430,7 @@ private function clear(): void
         $this->amqpChannel = null;
         $this->amqpQueues = [];
         $this->amqpExchange = null;
+        $this->amqpDelayExchange = null;
     }
 
     private function shouldSetup(): bool