Prince George may never ascend to the throne, according to a former BBC royal correspondent who shared his views on the evolving future of the British monarchy.

At just 12 years old, Prince George stands second in line to the throne, following his father, Prince William, and grandfather, King Charles. Around the time of his seventh birthday, George’s parents reportedly had a conversation with him about the path that lies ahead. It’s said that his mother, Princess Kate, has taken a leading role in helping prepare him for a future that may never materialize as expected.

Despite the preparation, royal expert Christopher Lee suggests that George might not ever become king.

In a conversation with the Express, Lee pointed out that several unpredictable elements could come into play as time passes, particularly the changing support for the monarchy itself.

“Voting for a monarchy is supporting an institution. Voting for the Sovereign is quite a different X-factor,” Lee explained. He added that by the time George would be set to wear the crown, public sentiment toward the monarchy as an institution—and toward the royal family personally—could be drastically different.