diff --git a/emacs/.emacs.d/init.org b/emacs/.emacs.d/init.org
index 9cf6fd2..ca9b931 100644
--- a/emacs/.emacs.d/init.org
+++ b/emacs/.emacs.d/init.org
@@ -667,6 +667,16 @@ To start off, first I need to enable lexical binding.
      (add-hook 'web-mode-hook 'oni-whitespace-only-tabs-mode)
    #+END_SRC
 
+** Makefile
+
+   Show tabs in Makefiles. Tabs are required at the beginning of any
+   non-continuation line in a recipe. I don't use it for indenting,
+   however.
+
+   #+BEGIN_SRC emacs-lisp
+     (add-hook 'makefile-mode-hook 'oni-whitespace-only-tabs-mode)
+   #+END_SRC
+
 * Applications
 
 ** Magit