The Englishman battled hard to hold on to his lead on Sunday and got his reward with a final green, one shot win at the Emirates Golf Club.
Wilett was finally caught up by the unrelenting chasing pack of Andy Sullivan and Spain’s Rafael Cabrera-Bello on the 18th hole.
But the world number 20 stepped up and made a pressure-packed 15-feet birdie putt to win his fourth European Tour title.