This account draws upon learning from an incident in an action learning set where an individual challenged a mandatory organisational requirement. As a facilitator I reflect upon my initial defensive reaction to this challenge. The use of critical action learning to inform ourselves as facilitators of the underlying tensions between set members and the organisations within which we work is explored. The importance of recognising and working with emotions objectively in action learning sets in order to maximise opportunities to learn about ourselves as individuals and the organisations we work in is emphasised. (Contains 1 figure.)