How to get rid of Firefox as default for RSS

I’ve switched to Chrome as my main browser (for now, at least, still keeping Firefox and Opera around) but I also use the “RSS Now” plasmoid for newsfeeds, and although Chrome is now officially the default browser, everytime I click on a news headline it insists on opening Firefox, which in turn complains that it is not the default browser. I remember that, in a previous KDE 4.x version, it insisted on Konqueror and I somehow got rid of that but can’t remember how. Any suggestions, anyone, as to how I can use the plasmoid to use Chrome?

Answer: a restart… (blush)