diff --git a/flake.nix b/flake.nix
index 04a483c..d1ac79d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -249,6 +249,7 @@
                           };
                         };
                       };
+                      default = { };
                     };
 
                     users = lib.options.mkOption {