Calendar – problems

Ok, this is my problem.
My permalinks are like this:
myweb.com/index.php/2006/01/31/post-title/

well, if I use the calendar, the link day is like:
http://myweb/index.php/2006/01/31/

but this is ERROR, because the right link day must be:
http://myweb/index.php/2006/01/31

I mean, without the last “/”

How can I do it???