diff --git a/Formula/rbenv.rb b/Formula/rbenv.rb
index 597ec725e9..5630491112 100644
--- a/Formula/rbenv.rb
+++ b/Formula/rbenv.rb
@@ -1,8 +1,8 @@
 require 'formula'
 
 class Rbenv < Formula
-  url 'https://github.com/sstephenson/rbenv/tarball/v0.3.0'
   homepage 'https://github.com/sstephenson/rbenv'
+  url 'https://github.com/sstephenson/rbenv/tarball/v0.3.0'
   md5 '26e00faff3ba04fdeeeecb0bfbf96351'
 
   head 'https://github.com/sstephenson/rbenv.git'
@@ -10,4 +10,10 @@ class Rbenv < Formula
   def install
     prefix.install Dir['*']
   end
+
+  def caveats; <<-EOS.undent
+    To enable shims and autocompletion, add rbenv init to your profile:
+      eval "$(rbenv init -)"
+    EOS
+  end
 end