diff --git a/nixos/modules/services/x11/terminal-server.nix b/nixos/modules/services/x11/terminal-server.nix
index 72ecb8fe2fd..bf9c3435503 100644
--- a/nixos/modules/services/x11/terminal-server.nix
+++ b/nixos/modules/services/x11/terminal-server.nix
@@ -42,8 +42,6 @@ in
         Xaccess=${pkgs.writeText "Xaccess" "localhost"}
       '';
 
-    networking.firewall.allowedTCPPorts = [ 5900 ];
-
     systemd.sockets.terminal-server =
       { description = "Terminal Server Socket";
         wantedBy = [ "sockets.target" ];