diff --git a/Casks/iterm2-nightly.rb b/Casks/iterm2-nightly.rb
index b42db60a6..84df4141b 100644
--- a/Casks/iterm2-nightly.rb
+++ b/Casks/iterm2-nightly.rb
@@ -11,7 +11,5 @@ cask :v1 => 'iterm2-nightly' do
 
   app 'iTerm.app'
   
-  zap :delete => [
-      '~/Library/Preferences/com.googlecode.iterm2.plist',
-  ]
+  zap :delete => '~/Library/Preferences/com.googlecode.iterm2.plist'
 end