diff --git a/symfony/messenger/4.3/config/packages/messenger.yaml b/symfony/messenger/4.3/config/packages/messenger.yaml
index b44ddf38a..92138fe85 100644
--- a/symfony/messenger/4.3/config/packages/messenger.yaml
+++ b/symfony/messenger/4.3/config/packages/messenger.yaml
@@ -5,7 +5,7 @@ framework:
 
         transports:
             # https://symfony.com/doc/current/messenger.html#transports
-            # async: '%env(MESSENGER_TRANSPORT_DSN)%'
+            # async: '%env(MESSENGER_TRANSPORT_DSN)%/messages_exchange'
             # failed: 'doctrine://default?queue_name=failed'
             # sync: 'sync://'
 
diff --git a/symfony/messenger/4.3/manifest.json b/symfony/messenger/4.3/manifest.json
index c770a842b..793d9d7c1 100644
--- a/symfony/messenger/4.3/manifest.json
+++ b/symfony/messenger/4.3/manifest.json
@@ -4,7 +4,7 @@
     },
     "env": {
         "#1": "Choose one of the transports below",
-        "#2": "MESSENGER_TRANSPORT_DSN=amqp://guest:guest@localhost:5672/%2f/messages",
+        "#2": "MESSENGER_TRANSPORT_DSN=amqp://guest:guest@localhost:5672/%2f",
         "#3": "MESSENGER_TRANSPORT_DSN=doctrine://default",
         "#4": "MESSENGER_TRANSPORT_DSN=redis://localhost:6379/messages"
     },