```ruby
class Emacs < Cask
  url 'http://emacsformacosx.com/emacs-builds/Emacs-24.3-universal-10.6.8.dmg'
  homepage 'http://emacsformacosx.com/'
  version '24.3'
  sha1 '1ee96baa50806b255d2114549acf2e6710949213'
  link :app, 'Emacs.app'
end
```

Remove :app designation from Emacs link
user
```ruby
class Emacs < Cask
  url 'http://emacsformacosx.com/emacs-builds/Emacs-24.3-universal-10.6.8.dmg'
  homepage 'http://emacsformacosx.com/'
  version '24.3'
  sha1 '1ee96baa50806b255d2114549acf2e6710949213'
  link 'Emacs.app'
end
```
assistant