diff --git a/modules/ssh/default.nix b/modules/ssh/default.nix
index 3587467..77c0015 100644
--- a/modules/ssh/default.nix
+++ b/modules/ssh/default.nix
@@ -1,9 +1,12 @@
-{ ... }:
+{ lib, ... }:
+let
+  ports = lib.lists.singleton 2222;
+in
 {
   services.openssh = {
     enable = true;
     startWhenNeeded = true;
-    ports = [ 2222 ];
+    ports = ports;
     openFirewall = true;
     settings = {
       AllowUsers = [ "tdback" ];