diff --git a/flake.nix b/flake.nix
index ef4e809..ebc5522 100755
--- a/flake.nix
+++ b/flake.nix
@@ -11,6 +11,7 @@
       #packages."aarch64-linux".sanddorn = self.nixosConfigurations.sanddorn.config.system.build.sdImage;
       packages."x86_64-linux".quitte = self.nixosConfigurations.quitte-vm.config.system.build.vm;
       packages."x86_64-linux".default = self.packages."x86_64-linux".quitte;
+      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixpkgs-fmt;
 
       nixosConfigurations = {
         birne = nixpkgs.lib.nixosSystem {