He became King of Sardinia-Piedmont in 1849 when his father abdicated the throne, after being defeated by the Austrians at the Battle of Novara. Victor Emmanuel was immediately able to obtain a rather favorable armistice at Vignale by the Austrian imperial army commander, Radetzky. The treaty, however, was not ratified by the Piedmontese lower parliamentary house, the Chamber of Deputies, and Victor Emmanuel retaliated by firing his Prime Minister, Claudio Gabriele de Launay, replacing him with Massimo D'Azeglio. After new elections, the peace with Austria was accepted by the new Chamber of Deputies. In 1849, Victor Emmanuel also fiercely suppressed a revolt in Genoa, defining the rebels as a "vile and infected race of canailles."