The light from the cell phone screens allowed surgeons to complete an emergency appendix operation during a blackout in a city in central Argentina, reports said on Saturday.

“The generator, which should have been working correctly, didn’t work,” a hospital spokesman, whose name was not given, told TN television news station.

“The surgeons and anesthetists were in the dark… A family member got some cell phones together from people in the hallway and took them in to provide light,” he said.