- title="{% if answer.accepted %}{% blocktrans with answer.accepted_by.username as who %}{{ who }} has selected this answer as the correct answer{% endblocktrans %}{% else %}{% trans "mark this answer as the accepted answer" %}{% endif %}"\r
+ title="{% if answer.nis.accepted %}{% blocktrans with answer.accepted_by.username as who %}{{ who }} has selected this answer as the correct answer{% endblocktrans %}{% else %}{% trans "mark this answer as the accepted answer" %}{% endif %}"\r