Renable a div class on the comment submitted by

Somewhere between versions, the div class on the comment submitted was removed. Would be nice to have it returned to the alpha starterkit in comment.tpl

  <div class="comment-submitted">
   <?php
      print t('Submitted by !username on !datetime',
      array('!username' => $author, '!datetime' => '<time datetime="' . $datetime . '">' . $created . '</time>'));
    ?>
  </div>