Can't seem to edit page title in og/users/%/add_user

Question

In our what should be titled "Add Users", both H1 and title both contain the value "Home". I have even tried to overide with another module's hook_menu_alter.

function hook_menu_alter(&$items) { 
   $items['og/users/%node/add_user']['#title'] = t('test');
}

Page.tpl.php is untouched:

<?php if ($title && !$is_front): ?>
   <h1 class="title"><?php print $title; ?></h1>
<?php endif; ?>

Any idea of other areas I should try?

Answer 1

This is what helped me in this particular situation, but I'd be open to mark another answer correct if anyone had a better option inside of a hook_form_alter().

// Force Title on the Add Users OG form. 
if ($form['#id'] == 'og-add-users') {
    drupal_set_title('Add Users');
}