Preview in the write post section

Hello,

The iframe in the write post section is used for a preview, which is really nice, but if you put an index.html in the root, this preview won’t work anymore,

i guess that the preview is linking toward site.com/?p=8797

but if you have an index.html in the same directory, the preview will try to display site.com/index.html?p=8797 which of course is only the html itself,

is there any clue to what i should edit so the preview would display site.com/index.php?p=8797 instead of site.com/?p=8797 ?

thanks !

D.