Google font enqueued incorrectly

Hello,

I ran my site through the W3C validator and am getting an error generated by this plugin’s inclusion of Open Sans.

Bad value Open Sans-css for attribute id on element link: An ID must not contain whitespace.

The inclusion can be found on line 20 of shortcode.php.

wp_enqueue_style('Open Sans',"https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700",array(),FRS_VERSION);

Note the space between Open and Sans (it should be a hyphen).

Could this whole line please be removed from the official version? If I remove it myself, I’m afraid it will just show up again when the plugin is updated. Not sure why Open Sans would be included on the front-end anyway.

https://www.ads-software.com/plugins/fluid-responsive-slideshow/