diff --git a/README.md b/README.md
index c3b6e452c7d73be95e632b8052f128f1a611b1c0..f165358e3cc4ae5b4b838b8c7c756c810dd59c10 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,6 @@
 
 This repository contains [NixOS](https://nixos.org) configuration expressions
 for setting up Department of Future Technologies CoffeeCam system.
+
+The configuration expects to have a root partition named `nixos` and a swap
+partition named `swap`.