diff --git a/nixos/modules/misc/ids.nix b/nixos/modules/misc/ids.nix
index 859838182ed4..0f3b8bcab8b0 100644
--- a/nixos/modules/misc/ids.nix
+++ b/nixos/modules/misc/ids.nix
@@ -254,7 +254,6 @@
       hydra-queue-runner = 235;
       hydra-www = 236;
       syncthing = 237;
-      mfi = 238;
       caddy = 239;
       taskd = 240;
       factorio = 241;
@@ -522,7 +521,6 @@
       octoprint = 230;
       radicale = 234;
       syncthing = 237;
-      #mfi = 238; # unused
       caddy = 239;
       taskd = 240;
       factorio = 241;
diff --git a/nixos/modules/services/networking/mfi.nix b/nixos/modules/services/networking/mfi.nix
deleted file mode 100644
index 775564a2c446..000000000000
--- a/nixos/modules/services/networking/mfi.nix
+++ /dev/null
@@ -1,100 +0,0 @@
-{ config, lib, pkgs, utils, ... }:
-with lib;
-let
-  name = "Ubiquiti mFi Controller";
-  cfg = config.services.mfi;
-  stateDir = "/var/lib/mfi";
-  # XXX 2 runtime exceptions using jre8: JSPException on GET / ; can't initialize ./data/keystore on first run.
-  cmd = "@${pkgs.jre7}/bin/java java -jar ${stateDir}/lib/ace.jar";
-  mountPoints = [
-    { what = "${pkgs.mfi}/dl"; where = "${stateDir}/dl"; }
-    { what = "${pkgs.mfi}/lib"; where = "${stateDir}/lib"; }
-    { what = "${pkgs.mongodb248}/bin"; where = "${stateDir}/bin"; }
-    { what = "${cfg.dataDir}"; where = "${stateDir}/data"; }
-  ];
-  systemdMountPoints = map (m: "${utils.escapeSystemdPath m.where}.mount") mountPoints;
-  ports = [ 6080 6880 6443 6843 ];
-in
-{
-  options = {
-    services.mfi = {
-      enable = mkEnableOption name;
-      openPorts = mkOption {
-        type = types.bool;
-        default = true;
-        description = "Whether to open TCP ports ${concatMapStrings (a: "${toString a} ") ports}for the services.";
-      };
-      dataDir = mkOption {
-        type = types.str;
-        default = "${stateDir}/data";
-        description = ''
-          Where to store the database and other data.
-
-          This directory will be bind-mounted to ${stateDir}/data as part of the service startup.
-        '';
-      };
-    };
-  };
-
-  config = mkIf cfg.enable {
-
-    networking.firewall.allowedTCPPorts = mkIf config.services.mfi.openPorts ports;
-
-    users.users.mfi = {
-      uid = config.ids.uids.mfi;
-      description = "mFi controller daemon user";
-      home = "${stateDir}";
-    };
-
-    # We must create the binary directories as bind mounts instead of symlinks
-    # This is because the controller resolves all symlinks to absolute paths
-    # to be used as the working directory.
-    systemd.mounts = map ({ what, where }: {
-        bindsTo = [ "mfi.service" ];
-        partOf = [ "mfi.service" ];
-        unitConfig.RequiresMountsFor = stateDir;
-        options = "bind";
-        what = what;
-        where = where;
-      }) mountPoints;
-
-    systemd.services.mfi = {
-      description = "mFi controller daemon";
-      wantedBy = [ "multi-user.target" ];
-      after = [ "network.target" ] ++ systemdMountPoints;
-      partOf = systemdMountPoints;
-      bindsTo = systemdMountPoints;
-      unitConfig.RequiresMountsFor = stateDir;
-
-      preStart = ''
-        # Clear ./webapps each run.
-        rm -rf                               "${stateDir}/webapps"
-        mkdir -p                             "${stateDir}/webapps"
-        ln -s "${pkgs.mfi}/webapps/ROOT.war" "${stateDir}/webapps"
-
-        # Copy initial config only once.
-        test -e "${stateDir}/conf" || cp -ar "${pkgs.mfi}/conf" "${stateDir}/conf"
-        test -e "${stateDir}/data" || cp -ar "${pkgs.mfi}/data" "${stateDir}/data"
-
-        # Fix Permissions.
-        # (Bind-mounts cause errors; ignore exit codes)
-        chown -fR mfi:      "${stateDir}" || true
-        chmod -fR u=rwX,go= "${stateDir}" || true
-      '';
-
-      postStop = ''
-        rm -rf "${stateDir}/webapps"
-      '';
-
-      serviceConfig = {
-        Type = "simple";
-        ExecStart = "${cmd} start";
-        ExecStop = "${cmd} stop";
-        User = "mfi";
-        PermissionsStartOnly = true;
-        UMask = "0077";
-        WorkingDirectory = "${stateDir}";
-      };
-    };
-  };
-}