diff --git a/.config/emacs/init.el b/.config/emacs/init.el
index 1ea3726..2110235 100644
--- a/.config/emacs/init.el
+++ b/.config/emacs/init.el
@@ -183,7 +183,11 @@
 ;; EPUB reader
 (use-package nov
   :init
-  (add-to-list 'auto-mode-alist '("\\.epub\\'" . nov-mode)))
+  (setq auto-mode-alist
+        (map-merge 'list
+                   '(("\\.epub\\'" . nov-mode))
+                   auto-mode-alist))
+  )
 
 (use-package company
   :init (global-company-mode)