What proved to be the only goal came in the 26th minute when Neil Catlin's 30-yard pass found Ansil Bushay on the edge of the box and he crossed for Mark West to glance into the corner, although Ducks keeper Paul O'Reilly got a hand to it.
United had a let off in the 61st minute when Bushay hit a post with only O'Reilly to beat, after Bob Dowie's mistake. The visitors best chance of an equaliser came on 76 when Michael Danzey shot over when well placed - if he had scored the Ducks would just about have deserved a point.
Aylesbury United Line up
Paul O'Reilly, Bob Dowie, Naseem Bashir, Steve Terry, Lee Harvey, Allan Pluckrose, Paul Hobbs, Steve Heard, Cliff Hercules, Michael Danzey, Jon Blencowe. Subs: Paul Murray, Matt Hayward.