没有第二个参数的Laravel Form Class

I simply want to give the text element of my edit-form a class.

{{ Form::text('first_name') }} 

I know that i have to use an array with the class of the field as third argument. But i do NOT want to give a second argument. This one

{{ Form::text('first_name' , ' ' , array('class' => 'form-control')) }}

applys the class correctly, but sets the dafault value to an empty string. This is a problem, because now laravels auto-complete function doesn't fill the form with the correct data from the database. Is there a way to give no second argument or setting it to default like this?

{{ Form::text('first_name' , default , array('class' => 'form-control')) }}

Thanks!

Okay, i solved it myself. It is as easy as it always is. Simply use

{{ Form::text('first_name' , null , array('class' => 'form-control')) }}