Already before the actual revolution, the Bundestag adopted the colors on 9 March 1848. The Frankfurt Parliament of 1848/1849 followed with an imperial law in December. The flag was so common that it was not even mentioned in the constitution of March 1849. After its restoration, in 1850/1851, the Bundestag made no further use of black-red-gold until 1863. The North German Confederation adopted, in its constitution, the colors black-white-red.