Disbarred attorney Scott Rothstein, who organized a $1.2 billion Ponzi scam, said on the witness stand Thursday that he and a lawyer on trial altered a client’s file to avoid a legal malpractice suit.

Rothstein, who is serving a 50-year prison sentence, said he and defendant Christina Kitterman doctored the file to make it look like work had been performed for Automatic Slims, a Fort Lauderdale restaurant and bar that has since closed.