diff --git a/morph/grid/local/public-keys/users.nix.example b/morph/grid/local/public-keys/users.nix.example
index 412077c0d5d6d98024036e369dfa552604f2dc57..10a60be1f7b8760e81f7fdb6ecd1d177913e05af 100644
--- a/morph/grid/local/public-keys/users.nix.example
+++ b/morph/grid/local/public-keys/users.nix.example
@@ -1,4 +1,6 @@
 # Add your public key. Example:
 # let key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHx7wJQNqKn8jOC4AxySRL2UxidNp7uIK9ad3pMb1ifF flo@fs-la";
+# You can use the following to get key from the local machine.
+# let key = builtins.readFile ~/.ssh/id_ed25519.pub;
 let key = undefined;
 in { "root" = key; "vagrant" = key; }