diff --git a/thoom-emacs/modules/thoom-completion.el b/thoom-emacs/modules/thoom-completion.el
index a1e407b..2f88ceb 100644
--- a/thoom-emacs/modules/thoom-completion.el
+++ b/thoom-emacs/modules/thoom-completion.el
@@ -108,6 +108,10 @@
   :ensure t
   ;; Bind prefix keymap providing all Cape commands under a mnemonic key.
   :bind ("C-c p" . cape-prefix-map) ;; Alternative keys: M-p, M-+, ...
+  :custom
+  (cape-dabbrev-check-other-buffers nil)
+  (cape-file-directory-must-exist nil)
   :init
+  (add-hook 'completion-at-point-functions #'cape-dabbrev)
   (add-hook 'completion-at-point-functions #'cape-file)
   (add-hook 'completion-at-point-functions #'cape-elisp-block))