Facebook PHP SDK v5 and Laravel 5.1 problem

Can't make facebook/php-sdk-v4 (version 5.0) work with Laravel. I know about existing packages, but for various reasons I need to use the official Facebook PHP SDK.

I keep getting this error:

Argument 1 passed to Facebook\FacebookClient::__construct() must be an instance of Facebook\HttpClients\FacebookHttpClientInterface, instance of Facebook\HttpClients\FacebookCurlHttpClient given

My code:

$fb = new Facebook\Facebook([
    'app_id' => Config::get('app.facebook_app.id'),
    'app_secret' => Config::get('app.facebook_app.secret'),
    'default_graph_version' => 'v2.5',
]);