On 31 August his aircraft was badly damaged by two German Albatros D.V fighters, but he managed to land behind the Belgian lines. He continued to fight and he claimed his 10th and last confirmed kill on 10 October 1917. He also had five 'probable' kills. This placed him third on the list of Belgian aces, behind Willy Coppens and André de Meulemeester. Shortly afterwards he was shot down and wounded by return fire from a German two-seater aircraft of "FAA 227" over Kortrijk on 23 February 1918. He spent the rest of the war as a prisoner of war in Germany. He tried to escape on 13 April 1918 but was caught ten days later.