Aberdeen will face either Kilmarnock or Rangers in the last eight of the Scottish Cup.
The Dons, who conquered Queen of the South 4-1 on Sunday, will find out their opponents when the Gers host Killie at Rugby Park next week.
The winners of the Caley Thistle-Ross County replay on February 19 will face a trip to Tannadice in the last eight. The two sides played out a pulsating 2-2 draw in Dingwall on Monday night.
The quarter-final ties will be played on the opening weekend of March. Partick Thistle entertain Hearts at Firhill and Hibernian take on Celtic in the other ties.