diff --git a/flake.nix b/flake.nix
index 56ab959..55ab651 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,18 +7,19 @@
     pkgs = import nixpkgs { system = "x86_64-linux"; };
   in rec {
     packages.x86_64-linux = rec {
-      default = linux-kernel-fanotify;
-      linux-kernel-fanotify = pkgs.linuxPackages.kernel.override {
-        extraConfig = ''
-          FANOTIFY_ACCESS_PERMISSIONS y
-        '';
-      };
+      default = linuxPackages_fanotify.kernel;
+
+      linuxPackages_fanotify = pkgs.linuxPackages.extend (final: prev: {
+        kernel = prev.kernel.override {
+          extraConfig = ''
+            FANOTIFY_ACCESS_PERMISSIONS y
+          '';
+        };
+      });
     };
 
     overlay = final: prev: {
-      linuxPackages_fanotify = pkgs.linuxPackages // {
-        kernel = packages.x86_64-linux.linux-kernel-fanotify;
-      };
+      inherit (packages.x86_64-linux) linuxPackages_fanotify;
     };
   };
 }