diff --git a/pkgs/by-name/fa/factorio/package.nix b/pkgs/by-name/fa/factorio/package.nix
index 706255953f631..c8412d73f3c5d 100644
--- a/pkgs/by-name/fa/factorio/package.nix
+++ b/pkgs/by-name/fa/factorio/package.nix
@@ -46,10 +46,12 @@ let
     Please ensure you have set the username and token with config.nix, or
     /etc/nix/nixpkgs-config.nix if on NixOS.
 
-    Your token can be seen at https://factorio.com/profile (after logging in). It is
-    not as sensitive as your password, but should still be safeguarded. There is a
-    link on that page to revoke/invalidate the token, if you believe it has been
-    leaked or wish to take precautions.
+    Your token can be seen at https://factorio.com/profile (after logging in).
+    Beware this will add the credentials to the Nix store, which is
+    world-readable on the local machine. It is not as sensitive as your
+    password, but should still be safeguarded. There is a link on that page to
+    revoke/invalidate the token, if you believe it has been leaked or wish to
+    take precautions.
 
     Example:
     {