The photoionization of nitric oxide from its ground state has been studied with the molecular-adapted quantum defect orbital (MQDO) method. Partial differential oscillator strengths for the different Rydberg series that constitute the ionization channels of NO from its ground state have been calculated up to a photon energy of 60 eV. The continuity of the calculated differential oscillator strengths across the ionization threshold, that is, in the discrete and continuous regions of the spectrum, has been adopted as a quality criterion, given the scarcity of comparative data.