Liam Boyce scored his 11th goal of the season as Hearts extended their lead at the top of the Scottish Championship with a 1-0 victory at play-off chasing Ayr.
Boyce converted from the penalty spot three minutes after half-time to move the Jambos 12 points clear of second-placed Dunfermline.
The visitors saw claims for an early penalty waved away when Boyce went down while Jamie Walker shot over in a first half of limited chances.
Hearts were given a spot-kick in the 48th minute following a handball in the box and Boyce made no mistake from 12 yards as the Jambos claimed a third consecutive league win.
