diff --git a/symfony/fake-chat-notifier/5.3/manifest.json b/symfony/fake-chat-notifier/5.3/manifest.json
index f569e60c..e4796bd3 100644
--- a/symfony/fake-chat-notifier/5.3/manifest.json
+++ b/symfony/fake-chat-notifier/5.3/manifest.json
@@ -1,5 +1,5 @@
 {
     "env": {
-        "#1": "FAKE_CHAT_DSN=fakechat+email://MAILER_SERVICE_ID?to=TO&from=FROM"
+        "#1": "FAKE_CHAT_DSN=fakechat+email://default?to=TO&from=FROM"
     }
 }
diff --git a/symfony/fake-sms-notifier/5.3/manifest.json b/symfony/fake-sms-notifier/5.3/manifest.json
index 0bace244..df5fbf43 100644
--- a/symfony/fake-sms-notifier/5.3/manifest.json
+++ b/symfony/fake-sms-notifier/5.3/manifest.json
@@ -1,5 +1,5 @@
 {
     "env": {
-        "#1": "FAKE_SMS_DSN=fakesms+email://MAILER_SERVICE_ID?to=TO&from=FROM"
+        "#1": "FAKE_SMS_DSN=fakesms+email://default?to=TO&from=FROM"
     }
 }