<div align="center">
-<form accept-charset="utf-8" action="{%url=modules.php?module=admin&what=del_user&userid=$content[userid]%}" method="post">
+<form accept-charset="UTF-8" action="{%url=modules.php?module=admin&what=del_user&userid=$content[userid]%}" method="post">
<div class="table dashed">
<div align="center" class="table_header bottom">