web rss feed doesn't give port number in the url

When i click the xwiki/bin/view/Main/WebRss?xpage=rdf link, found on every page, the returned xml contains urls that are without the 8080 port number, like http://myserver/xwiki/bin/view/Main/PageName, instead of http://myserver:8080/xwiki/bin/view/Main/PageName

this means that it's hard to open them from an rss reader (i use thunderbird)