Both Canada and Australia have experienced megafires in the past few years, the size and severity of which have been unprecedented. It has been suggested that Canada needs to “fight fire with fire” in order to solve the problem, and follow Australia’s lead in tackling this national environmental issue. Wrong. Rather, it is critically important that Canada does not repeat the mistakes that Australia has made. The widespread application of prescribed burning or hazard-reduction burning has been proposed as a way to protect people and property in Canada. Prescribed burning to reduce fire hazards has been employed throughout large parts of Australia. Yet robust scientific evidence showing that it is effective is remarkably limited. In some places, prescribed burning can reduce fire severity and restrict fire spread for a few years, but afterwards the regrowing vegetation becomes more flammable – an increased fire-risk effect that can last for many decades. That is: short-term gain, but long-term pain.