A Spanish village that replaced Pamplona-style bull running in the streets with an animal cruelty-free alternative using gigantic plastic resin balls is considering forcing participants to use helmets after a man was hospitalized with a severe head injury during this year’s run.

The 29-year-old man remains in hospital in Madrid after being helicopter-lifted out of the mountain village of Mataelpino, where he was crushed against a metal barrier during Sunday’s ball running.

The accident comes one year after another man was left in a coma and another suffered three broken ribs after similar incidents during the village’s 2017 festival.

“We have talked to some brands to try to get sponsorship for the use of helmets,” Javier de los Nietos, the mayor of Mataelpino, told the Spanish newspaper El Mundo.

“We haven’t done it earlier because we didn’t want people to be overconfident and think that nothing will happen if the ball hits them,” he added.

The resin ball, this year reported to weigh around 250 kilograms, careers down the steep streets of the village with metal barriers erected to keep it rolling along the route.