Astronauts on Russia’s Soyuz TMA-14 spacecraft manually docked with the International Space Station (ISS) on Saturday. This was post the malfunction of the automatic docking system.

Russian cosmonaut Gennady Padalka, the captain of the ship, had to manually dock the vessel at 1304 GMT after the automatic mode failed, mission control spokesman Valery Lyndin told Reuters.

At the last stage of the docking process, the crew had to to switch into manual mode, which Padalka did. This is not unusual,” Lyndin said. “Now everything is fine.”

The shuttle, which took off on Thursday from the Baikonur cosmodrome in Kazakhstan, carried the U.S. billionaire Charles Simonyi.

Simonyi, aged 60, is a software billionaire. He made his fortune developing software at Microsoft. He is now making history as the first space tourist to make the journey twice.