diff --git a/README.md b/README.md
index f07c0f9..ddc4364 100644
--- a/README.md
+++ b/README.md
@@ -92,4 +92,6 @@ On OpenBSD, enable inetd and relayd and start them:
 # rcctl start relayd inetd
 ```
 
+Don't forget to open the TCP port 1965 in your firewall.
+
 Vger will serve files named `index.gmi` if no explicite filename is given.
diff --git a/vger.8 b/vger.8
index 9265fa0..93e07ff 100644
--- a/vger.8
+++ b/vger.8
@@ -71,6 +71,7 @@ which negociate TLS connections and forward them
 to the inetd daemon on the
 .Nm
 port.
+Do not forget to open the TCP/1965 port in your firewall.
 .Pp
 .Xr relayd.conf 5
 configuration example: