Firewall.php issue

While using your plugin, I encountered an exception in the file Firewall.php:

Warning: preg_match(): Unknown modifier ‘g’ in /home/c/co15355/wordpress/public_html/wp-content/plugins/hide-my-wp/controllers/Firewall.php on line 849

The source is line 796: ‘@^searchbot [email protected]$@’,
Where @google.com is not escaped!

Please fix this issue!
Thank you!