Signature gets removed from users

Not exactly sure why this happens but when I enable AntiSpam all of my users signatures disappear. I was able to turn them back on again by commenting out line 962 in antispam.module.

/**
* Implements hook_comment_load().
*/
function antispam_comment_load($comments) {
  // add signature and spaminess to the $comments object

  foreach ($comments as $comment) {
    $rec = db_query("SELECT signature, spaminess FROM {antispam_spam_marks} WHERE content_type='comment' AND content_id=:content_id", array(':content_id' => $comment->cid))->fetchObject();
    if ($rec) {
      $comment->signature = $rec->signature;
      $comment->spaminess = $rec->spaminess;
    }
    else {
      //$comment->signature = '';
      $comment->spaminess = 0.0;
    }
    if ($comment->uid == 0) {
      $comment->name = variable_get('anonymous', t('Anonymous'));
    }
  }
}