Holders Rangers booked their place in tomorrow's draw for the Premier Sports Cup semi-finals with a 3-0 win over Dundee on their return to Ibrox.
A double from Cyriel Dessers and a James Tavernier penalty gave Philippe Clement's side a comfortable victory against the Dark Blues.
Aberdeen extended their winning run by seeing off League 2 side The Spartans 4-0 at Pittodrie in the other Saturday evening quarter-final.
Pape Gueye, Kevin Nisbet, Leighton Clarkson and Ester Sokler were all on target for Jimmy Thelin's team as they made it 11 straight wins.
Celtic host Falkirk on Sunday, live on Premier Sports with a 3.00pm kick-off.