diff --git a/lisp/ein-org-src.el b/lisp/ein-org-src.el
index 1719ab1..364f40f 100644
--- a/lisp/ein-org-src.el
+++ b/lisp/ein-org-src.el
@@ -90,6 +90,9 @@ This function may raise an error."
   (ein:org-src-keymap-setup-python)
   (ein:org-src-set-font-lock-defaults))
 
+(eval-after-load "auto-complete"
+  '(add-to-list 'ac-modes 'ein:notebook-org-src-mode))
+
 
 ;;; Keymap setup functions