Primary Navigation Change Woocommerce Icon

Hi

In the Primary Navigation I’m trying to change the shopping trolley icon to a basket icon. I’m using Code Snippets to add the filter.

Here is the code.

add_filter( 'generate_woocommerce_menu_cart_icon', 'tu_change_wc_menu_cart_icon' );
function tu_change_wc_menu_cart_icon() {
return '<i class="fa fa-shopping-basket" aria-hidden="true"></i>';
}

It's not changed the icon.

Thanks
Scott