diff --git a/home/jonas/static/doom-config/config.el b/home/jonas/static/doom-config/config.el
index f2125b6..bcbf70f 100644
--- a/home/jonas/static/doom-config/config.el
+++ b/home/jonas/static/doom-config/config.el
@@ -102,7 +102,7 @@
               ("C-<tab>" . 'copilot-accept-completion-by-word)))
 
 (after! undo-tree
-  (add-hook! 'prog-mode #'undo-tree-mode)
+  (add-hook! 'prog-mode-hook #'undo-tree-mode)
   (setq undo-tree-auto-save-history t)
   (setq undo-tree-enable-undo-in-region nil)
   (setq undo-tree-history-directory-alist '(("." . "~/.cache/doom/undo"))))