An analysis of V photometric light curves of the eclipsing cataclysmic variable SDSS J150240.98+333423.9/NZ Boo obtained in April-June, 2012 with a CCD photometer using the 60-cm telescope of the Sternberg Astronomical Institute's Crimean station is presented (based on more than 750 images). The first observation was made ~350-370 orbital cycles after the beginning of the outburst of April 2012; all the observations correspond to quiescence of the system. The orbital period, P = 0.0589106(4)d, changed by no more than {Delta}Porb/Porb~2x10^-5^ during the more than 37200 orbital cycles since the previous observations of the system.