When he settled the lawsuit against his university in March for $25 million, Donald Trump likely thought the episode was behind him. But he may yet have to testify.

Despite settling the lawsuit against Trump University in March, Donald Trump may still have to take the stand, LawNewz reports.

The $25 million settlement was approved by U.S. District Court Judge Gonzalo Curiel, despite the last-minute objections of plaintiff Sheri Simpson.

Trump once complained that Curiel, who was born in Indiana, was unable to make fair decisions in the case because of his Mexican heritage.

But now, a judicial body Trump dislikes even more, the 9th Circuit U.S. Court of Appeals, is set to hear from Simpson, who claims she was unlawfully stopped from opposing the settlement when it was before Curiel.

The 9th Circuit has ruled against Trump’s travel ban twice, most recently denying a second appeal citing Trump’s own tweets, which prompted a characteristic Twitter outburst:

Simpson wants to take Trump to court on the fraud charges, and according to LawNewz, “about a dozen law professors have filed supportive amicus briefs saying she does have a legal right to opt out of the settlement.” As Simpson’s complaint notes, the settlement did not allow students to opt out, contrary to a 2015 notice claiming it would.

If the 9th Circuit rules in her favor, Trump may have to testify under oath, despite the millions he paid out with the hope to avoid it.