diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 61c9c78..60ad042 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -112,7 +112,8 @@
 (use-package cat-mode :quelpa
   (cat-mode :fetcher github :repo "ad1217/emacs-cat-mode")
   :config
-  (cat-mode 1))
+  (cat-mode 1)
+  (define-key ibuffer-mode-map (kbd "c") 'cat-set-ibuffer))
 (use-package dired+ :quelpa
   :init
   (setq diredp-hide-details-initially-flag nil)