diff --git a/machines/universeair/configuration.nix b/machines/universeair/configuration.nix
index b5a6139..a3e51e8 100644
--- a/machines/universeair/configuration.nix
+++ b/machines/universeair/configuration.nix
@@ -63,6 +63,8 @@ in
     ]);
 
     homebrew = {
+      # It is not installed by nix, for now, so manually install:
+      # https://brew.sh/
       enable = true;
       # Graphical apps to install through homebrew instead of nixpkgs
       casks = [