Billionaire Elon Musk’s Tesla Motors is recalling all 90,000 of its Model S cars due to a problem with a front seat belt, Bloomberg reports.

After a front seat belt on a Model S in Europe was found to be improperly connected to “the outboard lap pretensioner,” it was determined that in the event of a collision, the seatbelt “would not provide full protection,” according to a statement released by the company.

Shares of the company fell as a result of the news.