diff --git a/default.nix b/default.nix
index 4d115c3..4ac9c15 100644
--- a/default.nix
+++ b/default.nix
@@ -1,4 +1,8 @@
-{ buildPythonApplication, zlib, lib }:
+{
+  buildPythonApplication,
+  zlib,
+  lib,
+}:
 
 with lib;
 
diff --git a/flake.nix b/flake.nix
index d36e695..705c2c5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,7 +18,10 @@
       {
         # https://github.com/NixOS/rfcs/pull/166
         formatter = pkgs.nixfmt-rfc-style;
-        packages.fck = pkgs.python311Packages.callPackage ./default.nix { };
+        packages = rec {
+          fck = pkgs.python311Packages.callPackage ./default.nix { };
+          default = fck;
+        };
       }
     );
 }