diff --git a/emacs b/emacs
index 44b68ed..dc03458 100755
--- a/emacs
+++ b/emacs
@@ -53,3 +53,6 @@
 (add-to-list 'auto-mode-alist '("\\.text\\'" . markdown-mode))
 (add-to-list 'auto-mode-alist '("\\.markdown\\'" . markdown-mode))
 (add-to-list 'auto-mode-alist '("\\.md\\'" . markdown-mode))
+
+;; Use the right mode for Arduino sketches
+(add-to-list 'auto-mode-alist '("\\.ino\\'" . c++-mode))