diff --git a/docs/CONFIG.md b/docs/CONFIG.md
index 91e625b..5492d90 100644
--- a/docs/CONFIG.md
+++ b/docs/CONFIG.md
@@ -54,9 +54,9 @@ Only `name`, `host` and `port` are required.
 
 ### Firewalls and proxies
 
-If you have MailHog behind a firewall, you'll need ports `8025` and `8080` by default.
+If you have MailHog behind a firewall, you'll need ports `8025` and `1025` by default.
 
-You can override this using `-api-bind-addr`, `-api-bind-addr` and `-api-bind-addr` configuration options.
+You can override this using `-api-bind-addr`, `-ui-bind-addr` and `-smtp-bind-addr` configuration options.
 
 If you're using MailHog behind a reverse proxy, e.g. nginx, make sure WebSocket connections
 are also supported and configured - see [this issue](https://github.com/mailhog/MailHog/issues/117) for information.