On the political level he also contributed towards stability. For instance, he tendered his resignation in protest in 1855, when the Volksraad rejected a draft constitution, but withdrew it when the constitutional bill was adopted in principle. With the adoption of the constitution in January 1857, the Vierkleur, designed by Van der Hoff and his brother, was also adopted as the flag of the Transvaal Republic. At Potchefstroom, Rustenburg and Pretoria Van der Hoff organized the religious part of the ceremonies marking the hoisting of the flag. For the occasion he also wrote a "Vlaggelied" which can be considered an early national anthem.