woo-breadcrumbs.php

function laudes_woocommerce_breadcrumbs() {
    return array(
            'delimiter'   => ' / ',
            'wrap_before' => '<nav class="woocommerce-breadcrumb" itemprop="breadcrumb">',
            'wrap_after'  => '</nav>',
            'before'      => '',
            'after'       => '',
            'home'        => _x( 'Home', 'breadcrumb', 'woocommerce' ),
        );
}

add_filter( 'woocommerce_breadcrumb_defaults', 'laudes_woocommerce_breadcrumbs' );