Nobiling moved to Berlin and in the afternoon of 2 June 1878, he shot and wounded Kaiser Wilhelm I from the window of his appartement on the Unter den Linden boulevard. He used a double-barelled shotgun and numerous grains hit the body of the emperor, though the life of the 81-years-old was saved by his Pickelhaube helmet. When immediately after the failed assassination attempt several witnesses tried to disarm him, Nobiling shot himself in the head with a revolver. Not fit to be questioned, he soon fell senseless and finally succumbed to his injuries in September 1878. His attempt to murder Wilhelm came less than one month after a similar attempt by Max Hödel.