User pictures in posts

Hi, forgive me if I'm missing something obvious. I just set up a forum on my drupal website. I wanted to enable user pictures in the forums, so I enabled pictures in User management - User settings. I then went to the Deco configure page and enabled user pictures in comments. However, there was no option to enable user pictures in posts. The end result is that all forum replies have user pictures enabled, but not the initial post of the forum thread. What can I do to fix this?