How can I make chrome (stop asking to be) the default browser?

I am running Linux Mint Debian edition (essentially Debian testing) and the Cinnamon desktop environment. Every time I launch google-chrome it asks to become the default browser. I have told it to do so in all ways I can think of but I still get this pop-up: What I have tried: * Clicking on "Set as default" in the pop-up. * Making chrome the default in its settings: * Using my desktop environment's (cinnamon) settings app to set it as default: * Associating it with all relevant mimetypes in the various ways and files where such things are defined: $ xdg-mime query default text/html chrome.desktop $ grep chrome .local/share/applications/mimeapps.list text/html=chrome.desktop x-scheme-handler/http=chrome.desktop x-scheme-handler/https=chrome.desktop x-scheme-handler/about=google-chrome.desktop x-scheme-handler/about=google-chrome.desktop; text/html=emacs.desktop;google-chrome.desktop;firefox.desktop; x-scheme-handler/http=chrome.desktop; $ grep chrome /usr/share/applications/defaults.list application/xhtml+xml=google-chrome.desktop text/html=google-chrome.desktop text/xml=gedit.desktop;pluma.desktop;google-chrome.desktop x-scheme-handler/http=google-chrome.desktop x-scheme-handler/https=google-chrome.desktop In those files, I replaced all occurrences of firefox (my previous default) with google-chrome. No other browsers are defined anywhere in the file: $ grep -E 'firefox|opera|chromium' /usr/share/applications/defaults.list \ .local/share/applications/mimeapps.list $ * Launching chrome as root in case that helps but it won't let me: * Using Debian's alternatives system to set it as default: $ sudo update-alternatives --install /usr/bin/www-browser www-browser /usr/bin/google-chrome 1080 update-alternatives: using /usr/bin/google-chrome to provide /usr/bin/www-browser (www-browser) in auto mode $ ls -l /etc/alternatives/www-browser lrwxrwxrwx 1 root root 22 Jan 23 17:03 /etc/alternatives/www-browser -> /usr/bin/google-chrome None of these seem to have any effect. Will no one rid me of this turbulent pop-up?