Maronite, to be exact.
Just as it's per the convention that Prime Minister is always Sunni, Speaker of the Parliament Shi'ite, Deputy PM Greek Orthodox Christian, Chief of General Staff Maronite and Chief of Army Staff Druze.
It's interesting Parliament members are always in a ratio of 6:5 in favour of Christians to Muslims, even though Christians had long ceased to be a majority (the legal fiction is being sustained due to last census taking place in... 1930 or something.)
I'm always reminded of Cyprus before the Turkish invasion, where President had to be Greek, while Vice President had to be Turkish.