Saints will be without defender Steven Anderson who has a knee injury.
Captain Kevin Rutkiewicz has recovered from his knee injury and is back in the squad but Peter MacDonald, Martin Hardie and Stuart McCaffrey remain out.
Falkirk (from): Olejnik, Barr, Twaddle, McLean, Scobbie, Flynn, O'Brien, Lima, Moutinho, Showunmi, Wagenaar, Lynch, Davidson, Healy, Compton, Duffy, Bloom, Bullen.
St Johnstone (from): Smith, MacKay, Grainger, Rutkiewicz, Duberry, Gartland, Moon, Millar, Davidson, Morris, Craig, Morais, Milne, Deuchar, Main, Connolly, Sheridan, Swankie.
Source: BBC Sport