diff --git a/nixos/modules/services/misc/disnix.nix b/nixos/modules/services/misc/disnix.nix
index c21cb2afc3ca4..b7b6eb7cd66e4 100644
--- a/nixos/modules/services/misc/disnix.nix
+++ b/nixos/modules/services/misc/disnix.nix
@@ -61,10 +61,7 @@ in
       ++ optional cfg.useWebServiceInterface "${pkgs.dbus_java}/share/java/dbus.jar";
     services.tomcat.webapps = optional cfg.useWebServiceInterface pkgs.DisnixWebService;
 
-    users.groups = singleton
-      { name = "disnix";
-        gid = config.ids.gids.disnix;
-      };
+    users.groups.disnix.gid = config.ids.gids.disnix;
 
     systemd.services = {
       disnix = mkIf cfg.enableMultiUser {