diff --git a/rwx/grub/__init__.py b/rwx/grub/__init__.py
index cd016ab..dde847a 100644
--- a/rwx/grub/__init__.py
+++ b/rwx/grub/__init__.py
@@ -1,3 +1,5 @@
+"""Wrap GRUB commands."""
+
 import cmd
 
 import ps
@@ -24,6 +26,7 @@ def make_image(
     memdisk_path: str,
     pubkey_path: str | None = None,
 ) -> None:
+    """Make a binary bootable image."""
     args = [
         ("grub-mkimage",),
         ("--compress", COMPRESSION),