remove payment singens if free product

templates/clientarea.tpl

@@ -99,7 +99,7 @@
                   {else}
                     <li>{debug}
                       <span class="list-heading">Trial Account</span>
-                      <span class="list-text">Restlaufzeit: {14 - $smarty.now + mktime($regdate)|date_format:'%Y-%m-%d %H:%M:%S'}</span>
+                      <span class="list-text">Restlaufzeit: {(14 - $smarty.now + mktime($regdate))|date_format:'%Y-%m-%d %H:%M:%S'}</span>
                     </li>
                   {/if}
                 </ul>