diff --git a/Cask b/Cask
index db6da62..44a5d97 100644
--- a/Cask
+++ b/Cask
@@ -2,3 +2,5 @@
 (source melpa)
 
 (package-file "smex.el")
+
+(depends-on "ido-completing-read+")
diff --git a/smex.el b/smex.el
index 6d4a72b..937dd73 100644
--- a/smex.el
+++ b/smex.el
@@ -4,9 +4,10 @@
 ;;
 ;; Author: Cornelius Mika <cornelius.mika@gmail.com> and contributors
 ;; URL: http://github.com/nonsequitur/smex/
-;; Package-Requires: ((emacs "24"))
+;; Package-Requires: ((emacs "24") (ido-completing-read+ "3.0"))
 ;; Version: 3.0
 ;; Keywords: convenience, usability
+;; Package-Requires: ((ido-completing-read+ "0"))
 
 ;; This file is not part of GNU Emacs.
 
@@ -28,6 +29,7 @@
 ;;; Code:
 
 (require 'ido)
+(require 'ido-completing-read+)
 
 (defgroup smex nil
   "M-x interface with Ido-style fuzzy matching and ranking heuristics."
@@ -135,8 +137,8 @@ Set this to nil to disable fuzzy matching."
         (ido-enable-flex-matching smex-flex-matching)
         (ido-max-prospects 10)
         (minibuffer-completion-table choices))
-    (ido-completing-read (smex-prompt-with-prefix-arg) choices nil nil
-                         initial-input 'extended-command-history (car choices))))
+    (ido-completing-read+ (smex-prompt-with-prefix-arg) choices nil t
+                          initial-input 'extended-command-history)))
 
 (defun smex-prompt-with-prefix-arg ()
   (if (not current-prefix-arg)