The author deconstructs the prevailing conceptualization of non-profit marketing and concludes it rests on three principles: voluntary exchange, an open system organization, and self-interest motivation. A review of the genesis of these principles revealed that alternative principles were ignored in the social science literature. Based on a qualitative analysis a revised conceptualization of non-profit marketing was suggested which incorporated the principles of reciprocity, the features of a contingency-choice organization, and altruistic interest motivation. A revised definition of non-profit marketing is offered based on these principles.