Laravel 5 Form Model Binding Checkbox Values

I am using a checkbox in a form, for some reasons I can't store the value of the checkbox status (checked or unchecked).

I am using form model binding.

My form is:

{!! Form::model($profile, ['method' => 'PATCH', 'action' => ['ProfilesController@update', $profile->id]]) !!}

<div class="form-group">
  {!! Form::label('wifi', 'Wifi') !!}
  {!! Form::checkbox('wifi','yes', $profile->wifi) !!}Wifi
</div>

{!! Form::close() !!}

My Schema:

$table->boolean('wifi')->nullable;

But I also tried it with an integer

I can't figure out what I am doing wrong