C.Porath, Associate Professor of Management at the University of Georgetown suggests:
If you need to confront a colleague who has been incorrect, ask yourself three questions:
1. Do I feel safe talking to this person?
2. Was the behaviour intentional?
3. Was this the only example of such behaviour on their part?
If you answered NO to any of these questions, do not discuss the incident with the culprit. Focus on your own effectiveness and, in future meetings, follow the acronym BIAF: Be brief, informative, amiable and firm.
But if you answered YES to all three questions, consider telling your co-worker how their behaviour made you feel.