diff --git a/config.el b/config.el
index a5b3f77..d863194 100644
--- a/config.el
+++ b/config.el
@@ -150,6 +150,8 @@
 (setq tab-width 2)
 ;; Set up nix LSP support
 (add-hook 'nix-mode-local-vars-hook #'lsp!)
+(after! lsp-nix
+  (setq lsp-nix-nil-formatter ["nixfmt"]))
 ;; Move buffer while maintaining cursor centered
 (use-package! centered-cursor-mode
   :config