diff --git a/machines/chungus/service-s3.nix b/machines/chungus/service-s3.nix
index 059f870..c151459 100644
--- a/machines/chungus/service-s3.nix
+++ b/machines/chungus/service-s3.nix
@@ -19,6 +19,9 @@
   services.minio = {
     enable = true;
     region = "home";
+    # this file was adjusted right after creation
+    # MINIO_ROOT_USER=root
+    # MINIO_ROOT_PASSWORD=<the password>
     rootCredentialsFile = config.clan.core.facts.services.s3.secret."s3.root".path;
   };