Double slashes in datepicker URLs

URL formatting for the datepicker CSS and Javascript files have double slashes when parsed. In mailchimp.php, beginning at line 101:

if (get_option('mc_use_datepicker') == 'on' && !is_admin()) {
    // Datepicker theme
    wp_enqueue_style('flick', MCSF_URL.'/css/flick/flick.css');
    // Datepicker JS
    wp_enqueue_script('datepicker', MCSF_URL.'/js/datepicker.js', array('jquery','jquery-ui-core'));
}

Output parses as follows:

<link rel="stylesheet" id="flick-css" href="http://mysite.com/wp-content/plugins/mailchimp//css/flick/flick.css?ver=3.5.1" type="text/css" media="all">
...
<script type="text/javascript" src="http://mysite.com/wp-content/plugins/mailchimp//js/datepicker.js?ver=3.5.1"></script>

The wp_enqueue calls probably should be:

if (get_option('mc_use_datepicker') == 'on' && !is_admin()) {
    // Datepicker theme
    wp_enqueue_style('flick', MCSF_URL.'css/flick/flick.css');
    // Datepicker JS
    wp_enqueue_script('datepicker', MCSF_URL.'js/datepicker.js', array('jquery','jquery-ui-core'));
}

http://wordpress.org/extend/plugins/mailchimp/