A flight from Germany to Mexico had to divert course and make an unexpected landing in Ireland after the pilot spilled coffee on the aircraft’s controls.

The Airbus jet, operated by Condor, was en route to Cancún from Frankfurt when the 49-year-old pilot, who has over 13,000 hours of flying experience, spilled a cup of piping hot coffee. The cabin crew had given the pilot the cup without a lid, and when the pilot knocked it over, some of the beverage splashed onto the audio control panel, according to CNN.