Laravel checkboxes from same group with clickable labels

In Laravel, I want to show a form with checkboxes and their labels. I do it like this:

        {{ Form::open(array('url'=>'fancyurl', 'method' => 'post')) }}
            <p>Categories:</p>
            <ul>
                @foreach($categories as $c)
                    <li>
                        {{ Form::checkbox('categories[]', $c->id) }}
                        {{ Form::label('categories', $c->name) }}
                    </li>
                @endforeach
            </ul>
            <p>
                {{ Form::submit('Submit') }}
            </p>
        {{ Form::close() }}

It shows perfectly the checkboxes and their labels. But when I click on a label, the checkbox of the label is still unchecked. How can I set a "for"-attribute in Laravel?