A Walt Disney World employee was knocked to the ground and injured Tuesday while trying to stop a 400-pound (181-kilogram) prop boulder that moved off its track and rolled toward seated audience members at the Indiana Jones Epic Stunt Spectacular at Disney’s Hollywood Studios in Orlando, Florida. A second worker stopped the boulder before it reached the spectators, the company confirmed Wednesday.

Disney said it was reviewing why the prop left its track and modified subsequent performances at the attraction to exclude the boulder. The company declined to disclose the injured worker’s condition, citing privacy reasons.

As MSI first reported, one of the attraction’s Tuesday shows was canceled immediately after the accident. Wednesday’s performances were modified to remove the boulder entirely while Disney’s safety team conducts its review.

“We’re focused on supporting our cast member, who is recovering,” Disney said in a statement. “Safety is at the heart of what we do, and that element of the show will be modified as our safety team completes a review of what happened.”

The Indiana Jones Epic Stunt Spectacular recreates an early scene from the 1981 film “Raiders of the Lost Ark,” in which the title character narrowly escapes a rolling boulder. The attraction has been a feature of Disney’s Hollywood Studios since the park opened.