Typo error missing a parenteses

include/staff/ticket-view.inc.php

@@ -868,7 +868,7 @@ if ($errors['err'] && isset($_POST['a'])) {
     <a class="close" href=""><i class="icon-remove-circle"></i></a>
     <hr/>
     <p class="confirm-action" style="display:none;" id="claim-confirm">
-        <?php echo sprintf(__('Are you sure you want to <b>claim</b> (self assign) %s?'), __('this ticket');?>
+        <?php echo sprintf(__('Are you sure you want to <b>claim</b> (self assign) %s?'), __('this ticket'));?>
     </p>
     <p class="confirm-action" style="display:none;" id="answered-confirm">
         <?php echo __('Are you sure you want to flag the ticket as <b>answered</b>?');?>