diff --git a/configuration.nix b/configuration.nix
index bdeba3f..717f1e5 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -1,4 +1,6 @@
-{pkgs, ...}: {
+{pkgs, ...}: let
+  haport = 8123;
+in {
   system.stateVersion = "24.05";
   users.groups.admin = {};
   users.users = {
@@ -14,7 +16,7 @@
     settings.PasswordAuthentication = true;
   };
 
-  networking.firewall.allowedTCPPorts = [22 8123];
+  networking.firewall.allowedTCPPorts = [22 haport];
   environment.systemPackages = with pkgs; [
     htop
   ];
@@ -34,7 +36,7 @@
       # HA
       {
         from = "host";
-        host.port = 8123;
+        host.port = haport;
         guest.port = 8123;
       }
     ];