Smith adds to Hearts’ injury problems
Ryan Stevenson (knee), Andrew Driver (tendinitis) and Jason Thomson (knee) are all doubts for the match at New St Mirren Park.
Janos Balogh (wrist), while Michael Stewart (calf), Jose Goncalves (thigh), Dawid Kucharski, Ismael Bouzid (both hamstring), Marian Kello (hand) and Johnny Stewart (knee) are still out.
Hearts (from): MacDonald, L Wallace, J Thomson, C Thomson, Obua, Zaliukas, Black, Templeton, Kingston, Jonsson, Palazuelos, Santana, Glen, Robinson, Stevenson, Nade, Ridgers, Driver.