diff --git a/bin/lib/installation.nix b/bin/lib/installation.nix
index 494c1f01abc76020255b2114f96eed39783b80ac..dc00b13fdd8acd2bd248199f030fc2fdfcf6a5a7 100644
--- a/bin/lib/installation.nix
+++ b/bin/lib/installation.nix
@@ -51,6 +51,8 @@ assert (typeOf swap) == "string";
     EOF
     luks_key=""
   '';
+
+  # Helper script that has to be run on the target machine to format it
   format = writeScriptBin "format_${hostname}" ''
     #!${zsh-bin}
     set -e