[Snippet WOO] Display Free instead of 0.00 in Woocommerce

Free instead of 0.00

/**
* @snippet       Display FREE if Price Zero or Empty - WooCommerce Single Product
* @how-to        add to functions.php in your childtheme
* @author        Peter Kuipers
* @testedwith    WooCommerce 3.9
* @Change free in line 13 to whatever you want to show instead of the value 0.00
*/
  
add_filter( 'woocommerce_get_price_html', 'kyzoe_price_free_zero_empty', 9999, 2 );
   
function kyzoe_price_free_zero_empty( $price, $product ){
    if ( '' === $product->get_price() || 0 == $product->get_price() ) {
        $price = '<span class="woocommerce-Price-amount amount">FREE</span>';
    }  
    return $price;
}