Force Marketplace links to open in http


After I setup SSL on my multisite i facing problems with my marketplace links.
When i click on a product, which is from a sub site without ssl, then it fail to open the link, because it try to open with https.
So i want to know if i can force marketplace links to open in http and then only let it change to https if SSL is enabled for that sub site.

Hope there is a way to handle this.

Best regards,