Same Address for shipping/billing checkbox

Was hoping someone may be able to point me in the right direction to fix a little issue iv been having with my sign up page.
There is a box which can be checked so that the billing information will automatically be the same as the shipping address without having to type it in twice.
It does work however when you first visit the page only the billing address is shown, yet the box is not checked. If I then check the box and then un-check it again the shipping address will also now appear.
Any ideas?

SOLVED:clap:

How did you fix it?

Go to /includes/templates/YOUR_TEMPLATE/templates/tpl_modules_create_account.php

Line: 232: <?php echo zen_draw_checkbox_field('shippingAddress', '1', $ShippingAddress, 'id="shippingAddress-checkbox"') . '<label style="" class="checkboxLabel" for="shippingAddress-checkbox">' . ENTRY_COPYBILLING . '</label>' . (zen_not_null(ENTRY_COPYBILLING_TEXT) ? '<span class="alert">' . ENTRY_COPYBILLING_TEXT . '</span>': ''); ?>

Change it to: