diff --git a/nixos/modules/services/networking/tailscale.nix b/nixos/modules/services/networking/tailscale.nix
index 859da5be81dd..aaff9221d5f0 100644
--- a/nixos/modules/services/networking/tailscale.nix
+++ b/nixos/modules/services/networking/tailscale.nix
@@ -57,6 +57,7 @@ in {
       example = "/run/secrets/tailscale_key";
       description = ''
         A file containing the auth key.
+        Tailscale will be automatically started if provided.
       '';
     };