Former WorldCom finance chief Scott Sullivan was sentenced today to five years in prison for his role in the largest accounting fraud in U.S. history.

Sullivan became the fifth WorldCom executive to be sentenced to prison in the US$11 billion scandal. His sentence is topped only by that of ex-CEO Bernard Ebbers, who got 25 years.

Sullivan was a key witness at Ebbers’s trial earlier this year, testifying the CEO repeatedly instructed him to adjust WorldCom’s books to meet Wall Street expectations.