diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 4d5aef4..f3d6410 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -65,6 +65,7 @@
 (setq fill-column 74)
 (add-hook 'mail-mode-hook 'auto-fill-mode)
 (add-hook 'markdown-mode-hook 'auto-fill-mode)
+(add-hook 'nroff-mode-hook 'auto-fill-mode)
 
 ;; file extensions
 (add-to-list 'auto-mode-alist '("\\.eml\\'" . mail-mode))