diff --git a/README.md b/README.md
index 73578dc..9409b2f 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,11 @@
 Config
 ------
 
-    nix-build ./krops.nix -A hel1a && ./result
+This is an attempt to configure my NixOS servers with [krops][1]. Usage:
+
+    $ direnv allow .
+    $ nix-build ./krops.nix -A hel1a && ./result
+
+There is probably nothing to look at here.
+
+[1]: https://cgit.krebsco.de/krops/about/