Code for deleting newsletter uses wp_ database prefix

My installation uses a different prefix for tables in the database (and not the standard wp_).
In the e-Newsletter plugin (version 2.7.3.6) at the list of newsletter you can delete a single newsletter. When you do, then an error occurs (in my installation) because the php script e-newsletter.php on line 1438 has the wp_ prefix for two tables hard coded.

Wrong code:
1438 $wpdb->query( $wpdb->prepare( "DELETE A FROM wp_enewsletter_send_members A INNER JOIN wp_enewsletter_send B ON A.send_id = B.send_id WHERE B.newsletter_id = %d", $newsletter_id ) );

Code should be:

1438    $wpdb->query( $wpdb->prepare( "DELETE A FROM {$this->tb_prefix}enewsletter_send_members A INNER JOIN {$this->tb_prefix}
enewsletter_send B ON A.send_id = B.send_id WHERE B.newsletter_id = %d", $newsletter_id ) );

Thank you!