Django modeltranslation - default field?

The Django porting application is usually a fantastic internationalization tool. But there is one thing that scares me. When I define my set of languages, modeltranslation generates n fields, one per language. The problem is that I have a redundant field (my default language is English).

So, I have a:

field field_en field_fr field_jp

And field == field_en. Am I using modeltranslation incorrectly, or is there some way to fix this?

EDIT: To clarify, I would like to get rid of the field or field_en.