anchors in multilingual page

Hi, I am creating this multilingual one page site with mqTranslate and the menu links are links (Appearance->Menus->Link) to sections in my page. I’m using page slug as the section id which the link is referring to (sections are pages looped to one page). It works with the default language, but when I switch the language, the link will switch my page content to default language.

for example in my default language the link would be http://host/site/#about and with different language http://host/site/#about?lang=fi, but it brings me to default page with the php get still in url so it does nothing.

Are there different ways to fix this? Which one do you recommend?

Thanks for your help 🙂