AbstractIn the paper we argue against the traditional assumption about the relationship between morphology and harmony in Hungarian according to which monomorphemic and polymorphemic (suffixed) forms behave in the same way harmonically within the domain of harmony. We show that the harmonic properties of the root are inherited by morphologically complex forms based on the root and this can override the phonological restrictions on harmony. We propose an Optimality Theory analysis of the interaction between the phonological constraints on harmony and the paradigm uniformity constraint Harmonic Uniformity.