The blind soul singer filed papers in California to bring an end to his 11-year marriage to the fashion designer.
In the court documents, seen by celebrity website TMZ, Wonder put two fingerprints instead of a signature. He is also referred to by his full name. Stevland Morris
The pair separated in 2009 and have two sons together.
In the documents Wonder requests joint custody of the children in return for paying spousal and child support.
There was no indication of how much of Wonder’s multi-million dollar fortune, Morris would be entitled to.
Wonder was married to Motown singer Syreeta Wright from 1970 to 1972 and has seven children in total.