diff --git a/.gitignore b/.gitignore
index 5338d5d..956604f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ smex-items
 recentf
 transient
 ido.last
+config.el
diff --git a/config.org b/config.org
index 1610882..3a4090c 100644
--- a/config.org
+++ b/config.org
@@ -355,6 +355,17 @@ Including indent-buffer, which should not be called automatically on save."
     #+BEGIN_SRC emacs-lisp
     (defalias 'perl-mode 'cperl-mode)
 
+    #+END_SRC
+*** C
+    This use c-eldoc mode so it prints the function's prototype in the
+    minibuffer. Which is very useful since Irony works when it wants
+    to.
+    #+BEGIN_SRC emacs-lisp
+    (use-package c-eldoc
+    :ensure t
+    :init
+    (add-hook 'c-mode-hook 'c-turn-on-eldoc-mode))
+    
     #+END_SRC
 ** Beacon mode
    's cool