duplicate id for and

Thanks for the great plugin, using it for ages already ??

The following markup generated by the plugin is not valid though, because the same id is used for the <p> and the <input> tag. Could this be fixed? I guess the <p> should have a different id?

<p id="si_captcha_code">
<input id="si_captcha_code" name="si_captcha_code" type="text" />
<label for="si_captcha_code" >CAPTCHA Code</label><span class="required">*</span>
</p>