diff --git a/setup/symfony_server.rst b/setup/symfony_server.rst
index 087622036a2..7420a822ab6 100644
--- a/setup/symfony_server.rst
+++ b/setup/symfony_server.rst
@@ -352,7 +352,7 @@ RabbitMQ 5672 ``RABBITMQ_`` (set user and pass via Docker ``RABBITMQ_D
Elasticsearch 9200 ``ELASTICSEARCH_``
MongoDB 27017 ``MONGODB_`` (set the database via a Docker ``MONGO_DATABASE`` env var)
Kafka 9092 ``KAFKA_``
-MailCatcher 1025/1080 ``MAILCATCHER_``
+MailCatcher 1025/1080 ``MAILER_``
or 25/80
Blackfire 8707 ``BLACKFIRE_``
============= ========= ======================
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