Show user favicon in user blog loop

I used a snippet from one of your colleagues, to create a list of blogs for a user, and I want to add the favicon from the site to the list...

The snippet I used is here:

and I added this to the code just after the opening a tag in the

  • :

    if (has_site_icon()) {
    echo '<img src="'.$user_blog->get_site_icon_url.'" alt="'.$user_blog->blogname.'"/> ';
    } else {
    echo '<img src=""/>';

    But it doesn't work, it outputs the img tag with src=(unknown). Is there anyway I can make this work? Any help is appreciated.