WordPress 3.3 breaks my custom dash logo

Hello, I have another problem with 3.3 update. I was using this code in my functions file:

function my_custom_logo() {

   echo '<style type="text/css">

         #header-logo { background-image: url('.get_bloginfo('template_directory').'/images/customlogo.PNG) !important; }</style>';

}

To obtain a custom logo in my dash.
Unfortunately it doesn’t works anymore.