h1 containing logo in header of Joomla template

I'm working on a Joomla template. It is based on Beez - one of the templates included in the install.

The structure of the header layout is as follows:

<div id="header">
<h1 id="logo">
<img src="<?php echo $this->baseurl ?>/templates/<?php echo $this->template;?>/images/logo.gif" border="0" alt="<?php echo JText::_('Logo Beez, Three little Bees'); ?>" width="300" height="97" />
<span class="header1"><?php echo JText::_('Joomla Accessible Template'); ?></span>
</h1>
</div><!-- end header -->

I'm wondering about the h1.

I was informed lately that all h1 instances should be unique and the should only be one per page. Joomla outputs the page title as h1 so already we're breaking the rules. Can anyone confirm this or add any info?

Thanks in advance