diff --git a/flake.nix b/flake.nix
index 2f06d27..c82df56 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,10 +10,21 @@
     , nixpkgs
     , home-manager
     , ...
-    } @inputs: {
+    } @inputs:
+    let
+      overlays = [
+        (import (builtins.fetchTarball {
+          url = https://github.com/nix-community/emacs-overlay/archive/0fe268a3b03ab9ef7a77363c64247030ee3902a7.tar.gz;
+          sha256 = "sha256:05cxwj5xnw9kci75pgzd3kff9k3548fsc0x8y0s08jzcidai139f";
+        }))
+      ];
+    in {
       nixosConfigurations.falcon = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [
+          ({ config, pkgs, ... }: {
+            nixpkgs.overlays = overlays;
+          })
           ./hosts/falcon
 
           home-manager.nixosModules.home-manager
@@ -28,12 +39,7 @@
         system = "x86_64-linux";
         modules = [
           ({ config, pkgs, ... }: {
-            nixpkgs.overlays = [
-              (import (builtins.fetchTarball {
-                url = https://github.com/nix-community/emacs-overlay/archive/0fe268a3b03ab9ef7a77363c64247030ee3902a7.tar.gz;
-                sha256 = "sha256:05cxwj5xnw9kci75pgzd3kff9k3548fsc0x8y0s08jzcidai139f";
-              }))
-            ];
+            nixpkgs.overlays = overlays;
           })
           ./hosts/eagle