In this talk we will discuss the effects of correlations among observable parameters of neutrino mixing on predictions for the leptonic Dirac CP-violating phase. We explore these correlations on a standard class of theoretical models that include a single source of CP-violation due to charged lepton corrections. We take two complementary approaches -- one in which the model parameters are assumed to be completely uncorrelated and one in which correlations between parameters from theoretical relations are considered. We will further show that both approaches yield physically meaningful predictions for the leptonic Dirac CP-violating phase.