Choice reverse key / value

[Kaaly]

I create a form like this :

$categories = ['Gestion', 'other' => 'Autre catégorie'];
$formProject = new Form('project_category');
$formProject->add(new Choice('category', ['label' => 'Catégorie', 'choices' => $categories]));

The result is :

<select id="project_category_category" name="project_category[category]">
                     <option value="Gestion">0</option>
                      <option value="Autre catégorie">other</option>
</select>

but it shoud be this :

<select id="project_category_category" name="project_category[category]">
                     <option>Gestion</option>
                      <option value="other">Autre catégorie</option>
</select>

Can you fix it please ?