diff --git a/pages/account/55.php b/pages/account/55.php
index 5e78c6e..9c6fe44 100644
--- a/pages/account/55.php
+++ b/pages/account/55.php
@@ -16,7 +16,7 @@
     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */ ?>
 <?
-  if ($_SESSION['profile']['admin'] != 1 || intval($_REQUEST['userid']) < 1) {
+  if ($_SESSION['profile']['admin'] != 1 || !array_key_exists('userid',$_REQUEST) || intval($_REQUEST['userid']) < 1) {
     $user_id = intval($_SESSION['profile']['id']);
 ?>
 <table align="center" valign="middle" border="0" cellspacing="0" cellpadding="0" class="wrapper">
@@ -82,7 +82,7 @@
 <table align="center" valign="middle" border="0" cellspacing="0" cellpadding="0" class="wrapper">
   <tr> 
 <?
-      if ($_SESSION['profile']['admin'] == 1 && intval($_REQUEST['userid']) > 0) {
+      if ($_SESSION['profile']['admin'] == 1 && array_key_exists('userid',$_REQUEST) && intval($_REQUEST['userid']) > 0) {
 ?>
     <tr><td colspan="3" class="DataTD"><a href="account.php?id=43&amp;userid=<?=$user_id ?>">back</a></td></tr>
 <?    } else {
@@ -90,7 +90,7 @@
                  '  WHERE `u`.`id` = \''.(int)intval($_SESSION['profile']['id']).'\' AND `n`.`to` = `u`.`id` AND `expire` < now() '.
                  '  GROUP BY `u`.id, `u`.`assurer`';
         $res = mysql_query($query);
-        if (!res) {
+        if (!$res) {
           print '<td colspan="3" class="DataTD">'._('Internal Error').'</td>'."\n";
         } else {
           $row = mysql_fetch_array($res, MYSQL_NUM);