Darren McGregor returns to the St Mirren squad after missing the defeat by Rangers following the death of his father.
Saints have no new injuries but David Barron and Garry Brady are still short of fitness following lay-offs.
Chris Maguire returns from suspension.
Defender Zander Diamond, who was forced off in the defeat by Dundee United at Tannadice on Monday after suffering a cut forehead, should be okay.
Long-term injured players Darren Mackie, Yoann Folly and Fraser Fyvie are still out.
St Mirren (from): Gallacher, McAusland, Travner, McGregor, Potter, Murray, Thomson, Goodwin, Dargo, Higdon, McLean, van Zanten, Mair, Mooy, McGowan, Cregg, Wardlaw, Samson.
Aberdeen (from): Langfield, McNamee, Blackman, Diamond, McArdle, Smith, Considine, Young, Milsom, Aluko, Magennis, Hartley, Jack, Vernon, Maguire, Howard, Vujadinovic, Pawlett,
Paton.
