diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 4921dee..cc6528c 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -180,6 +180,7 @@
 (add-hook 'c-mode-hook 'oni:c-mode-func)
 (add-hook 'css-mode-hook 'oni:css-mode-func)
 (add-hook 'diary-display-hook 'oni:diary-display-func)
+(add-hook 'emacs-startup-hook 'oni:emacs-startup-func)
 (add-hook 'emacs-lisp-mode-hook 'oni:emacs-lisp-mode-func)
 (add-hook 'erc-mode-hook 'oni:erc-mode-func)
 (add-hook 'go-mode-hook 'oni:go-mode-func)
diff --git a/.emacs.d/site-lisp/oni.el b/.emacs.d/site-lisp/oni.el
index a2dbea0..2729474 100644
--- a/.emacs.d/site-lisp/oni.el
+++ b/.emacs.d/site-lisp/oni.el
@@ -104,6 +104,11 @@ DOT are intentionally being skipped."
   "Function for `emacs-lisp-mode-hook'."
   (eldoc-mode))
 
+(defun oni:emacs-startup-func ()
+  "Function for `emacs-init-hook'."
+  (require 'auto-complete-config)
+  (ac-config-default))
+
 (defun oni:erc-mode-func ()
   "Function for `erc-mode-hook'."
   (erc-fill-mode -1)