[TYPO3-english] duplicate content issue with typo3 site

[Joydeep Bakshi]

Hello list,

I have checked some of my typo3 site with http://virante.org/seo-tools/duplicate-content
The sites already have realurl enable. But for all the sites the tool detect

<domain.com>   and  <domain.com>/index.php  as duplicate page.

Could anyone suggest  how to fix it ?

Thanks