The Makran subduction zone is not very active seismically, but nevertheless capable of hosting destructive earthquakes and tsunami, such as the Balochistan event in 1945, which led to about 4000 casualties. Some recent studies suggest that the maximum magnitude might be higher than previously thought. We generate a set of synthetic earthquake catalogs to compute tsunami hazard along the coast of Iran, Pakistan and Makran and show how different seismicity assumptions affect the hazard.