Weeks after Prince Harry and Meghan Markle signed a Netflix deal that could be worth up to $150 million, a royal expert is speaking out to warn them that the freedom they have achieved may not be set in stone.

“It is important to bear in mind that Harry and Meghan are a unique case,” royal expert Richard Fitzwilliams told the U.K. Express. “They are non-working royals, provided the arrangement which the Queen brokered at Sandringham is renewed before the end of next March.”

This means that the Queen still has time to change the terms of the deal she made with Harry and Meghan, which could drastically impact their collaborations with Netflix.

This comes weeks after Harry and Meghan gleefully announced their deal with Netflix.

“Our lives, both independent of each other, and as a couple have allowed us to understand the power of the human spirit: of courage, resilience, and the need for connection,” they said in a statement. “Through our work with diverse communities and their environments, to shining a light on people and causes around the world, our focus will be on creating content that informs but also gives hope.”

“As new parents, making inspirational family programming is also important to us, as is powerful storytelling through a truthful and relatable lens,” the couple added.

Sources have already said that Meghan has gone to Netflix to pitch a movie about Black Lives Matter co-founder Patrisse Cullors, directly violating the Queen’s golden rule of royals staying out of politics.

“She thinks her story needs to be told – and she would love to be the one to make it,” a source told Daily Mail, adding that Meghan is “blown away by the incredible work Patrisse has done.”

Harry and Meghan shocked the world when they stepped down as senior royals earlier this year. They then briefly moved to Canada before relocating to Meghan’s hometown of Los Angeles, California. There, they spent months living in the $18 million mansion of Hollywood mogul Tyler Perry until they finally bought a mansion of their own in the nearby city of Santa Barbara in July.