iPad build not respecting tiapp.xml orientation options

I have the orientations i want specified in my tiapp.xml as follows:

<iphone>
        <orientations device="iphone">
            <orientation>Ti.UI.PORTRAIT</orientation>
        </orientations>
        <orientations device="ipad">
            <orientation>Ti.UI.PORTRAIT</orientation>
        </orientations>
</iphone>

I'm using iOS 6.1, Titanium SDK 3.1.1 GA