Alan Trouten scored twice as Ayr United booked their place in the Scottish Cup fourth round with a replay win over Montrose.
The Division One outfit proved too strong for their Third Division opponents, with midfielder Trouten notching in either half to set up a visit to Livingston.
Trouten fired the visitors ahead in the 28th minute, turning home Michael McGowan's pass from 12 yards, before doubling the visitors' advantage with a wonderful strike from the edge of the penalty area with 18 minutes remaining.
Jamie Winter's late 20-yard strike set up a tense finish but Brian Reid's side held on.
Montrose: Andrews, McNalley, Smart, Crighton, Douglas Cameron, Lunan (McGowan 77), Masson, Winter, Pierce (McPhee 61), Boyle (Dimilta 77), Johnston. Subs Not Used: Wood, Crawford.
Goals: Winter 81.
Ayr United: Cuthbert, Tiffoney, John Robertson, Smith, Malone, Trouten, Geggan, McKernon, McGowan (Connolly 78), Moffat, Roberts (Wardlaw 82). Subs Not Used: McWilliams, Ross Robertson, Burke.
Goals: Trouten 28,73.
Ref: Matt Northcroft