diff --git a/checks.nix b/checks.nix
deleted file mode 100644
index 9505c35..0000000
--- a/checks.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-  self,
-  flake-utils,
-  nixpkgs,
-  ...
-}:
-(flake-utils.lib.eachDefaultSystem (
-  system:
-  let
-    pkgs = nixpkgs.legacyPackages.${system};
-    formatter = self.formatter.${system};
-  in
-  {
-    checks = {
-      format = pkgs.runCommand "check-format" {
-        buildInputs = [ formatter ];
-      } "${formatter}/bin/nixpkgs-fmt --check ${./.} && touch $out";
-    };
-  }
-)).checks
diff --git a/devshell.nix b/devshell.nix
index 1fbad07..3931494 100644
--- a/devshell.nix
+++ b/devshell.nix
@@ -6,7 +6,6 @@
 
   packages = with pkgs; [
     agenix
-    nixpkgs-fmt
     nixos-rebuild
   ];
 
diff --git a/outputs.nix b/outputs.nix
index 08e8ad0..ef7a742 100644
--- a/outputs.nix
+++ b/outputs.nix
@@ -27,6 +27,10 @@
       in
       import ./devshell.nix { inherit pkgs extraModules; };
 
+    checks = {
+      formatting = treefmtEval.config.build.check self;
+    };
+
     formatter = treefmtEval.config.build.wrapper;
 
     packages = import ./pkgs { inherit pkgs; } // {
@@ -35,7 +39,6 @@
   }
 ))
 // {
-  checks = import ./checks.nix inputs;
   hmModules = import ./home/modules.nix { lib = nixpkgs.lib; };
   hmConfigurations = {
     dadada = import ./home;