At the end of http://symfony.com/doc/current/book/translation.html#twig-templates I read about {% trans_default_domain "app" %} to set a translation domain for a whole template. But for me it does not work. Calling app/console translation:extract de --dir=src/ --output-dir=app/Resources/translations --output-format=xliff --keep Just puts all messages in the messages.de.xliff file. But if I set the domain manually for a given label like {{ label.name|trans({}, 'app') }} And execute the same extract command as above, then I get a new file app.de.xliff Is there anything more to do when using trans_default_domain?