diff --git a/readme.md b/readme.md
index 23854d43..a60add24 100644
--- a/readme.md
+++ b/readme.md
@@ -21,6 +21,7 @@ If you have an existing `configuration.nix`, you can use the `nixos-cosmic` flak
 
   outputs = { self, nixpkgs, nixos-cosmic }: {
     nixosConfigurations = {
+      # NOTE: change "host" to your system's hostname
       host = nixpkgs.lib.nixosSystem {
         modules = [
           {