Contribute correction: MCM Index

 _    _      ___      _____    _    _   
| |  | ||   / _ \\   / ____|| | || | || 
| |/\| ||  / //\ \\ / //---`' | || | || 
|  /\  || |  ___  ||\ \\___   | \\_/ || 
|_// \_|| |_||  |_|| \_____||  \____//  
`-`   `-` `-`   `-`   `----`    `---`