A Delaware judge upheld her earlier ruling striking down Elon Musk’s multibillion-dollar pay package, plunging Tesla’s board into more uncertainty over how to compensate its superstar chief executive for a decade of work.

The court’s decision follows a shareholder vote earlier this year approving the pay package for a second time. Tesla had argued that the vote addressed many of the court’s criticisms that Musk’s compensation deal had been flawed, partly because of insufficient disclosures to shareholders.