Once part of the revolutionary government, Deák made several trips to the court in Vienna, seeking a compromise between the Habsburg monarchy and Kossuth's Extremist Liberals. When his efforts failed, he resigned his ministerial post, but remained a Member of Parliament, defending the constitutional legitimacy of the April laws. He retired to his estate at Kehida before the end of the War of Independence, and took no further active part in events surrounding the revolution. An Austrian court martial acquitted him after Hungary's defeat.