We investigate the implications of a sterile neutrino on the physics potential of the proposed experiment DUNE and future runs of NO A using latest NO A results. Using combined analysis of the disappearance and appearance data, NO A reported preferred solutions at normal hierarchy (NH) with two degenerate best-fit points: one in the lower octant (LO) and = 1.48 and the other in higher octant (HO) and = 0.74 . Another solution of inverted hierarchy (IH), which is 0.46 away from best fit, was also reported. We discuss chances of resolving these degeneracies in the presence of sterile neutrino.