{
mutt_free_list (&hdr->env->in_reply_to);
mutt_free_list (&hdr->env->references);
- hdr->env->irt_changed = hdr->env->refs_changed = 1;
+ hdr->env->irt_changed = hdr->env->refs_changed = hdr->changed = 1;
clean_references (hdr->thread, hdr->thread->child);
}