Contribute correction: MSX Invaders! (unreleased)

 _    _      ___      ______    ______  
| || | ||   / _ \\   /_   _//  /_   _// 
| || | ||  | / \ ||    | ||     -| ||-  
| \\_/ ||  | \_/ ||   _| ||     _| ||_  
 \____//    \___//   /__//     /_____// 
  `---`     `---`    `--`      `-----`