An error after updating to Sf2.1

[matiasmm]

Since I updated to Sf2.1 I'm getting the following error when I call the twigstring service

Warning: Missing argument 2 for Ital\Framework\SpecialCommentsBundle\Handler::__construct(),
 called in /home/matias/workspace/proyecto/app/cache/dev/be/4f12d16ca15ebe3c1d000000_4f12d16ca15ebe3c1d010000/appDevDebugProjectContainer.php   
on line 2613 and defined in /home/matias/workspace/proyecto/src/Ital/Framework/SpecialCommentsBundle/Handler.php
line 11 

But I could solved creating the service with this way:

<service id="templating.engine.twig2" class="%templating.engine.twig2.class%" public="false">
        <argument type="service" id="twig2" />
        <argument type="service" id="templating.name_parser" />
        <argument type="service" id="templating.locator" />  <!-- Added this new parameter --->
        <argument type="service" id="templating.globals" />
</service>

I don't know if there is a better solution.