diff --git a/en/nix-bitcoin-01.md b/en/nix-bitcoin-01.md
index a06b462..6666222 100644
--- a/en/nix-bitcoin-01.md
+++ b/en/nix-bitcoin-01.md
@@ -320,6 +320,8 @@ Then we can include it in our outputs.
 }
 ```
 
+Note: change `nix-bitcoin.operator.name` to your actual username. 
+
 Rebuild again with `sudo nixos-rebuild switch --flake .`
 
 Note: since we've enabled the secure node preset, we have disabled `sudo`. Use `doas` instead of `sudo` from now on. `doas` is a more secure alternative to `sudo`. [See more]()