Mbaso was also part of the team that defeated Algeria 6-5 on penalties to qualify to CAN 1978 later that same year. His last game for Zambia turned out to be a goalless draw with Egypt on 31 July 1977 as Zambia failed to overturn a 2-0 first leg deficit in a 1978 World Cup qualifier and he was left out of that year's ECA tournament and subsequently, missed out on CAN 1978 in Ghana.