Adding Yelp Icon To Social Icons

Hi,

I found a thread in the support topics about add a yelp icon. I followed it but it doesn’t seem to be working correctly. The hover colors show up but the icon is not.

I adde this code to my functions php

function avia_add_custom_icon($icons) {
	$icons['yelp']	 = array( 'font' =>'fontello', 'icon' => 'uF1E9');
	return $icons;
}
add_filter('avf_default_icons','avia_add_custom_icon', 10, 1);

// Add new icon as an option for social icons
function avia_add_custom_social_icon($icons) {
	$icons['yelp'] = 'yelp';
	return $icons;
}
add_filter('avf_social_icons_options','avia_add_custom_social_icon', 10, 1);

Than I added this css

#top #wrap_all .av-social-link-yelp:hover a {
    background-color: red;
    color: white;
}