Brian Reid admits Albion Rovers blew a big chance of Scottish Cup progression by missing a last-gasp penalty, before University of Stirling ran out 1-0 winners at Cliftonhill.
And the Rovers gaffer has demanded a reaction when they visit Forfar in League Two on Saturday.
With the third-round tie poised at 0-0, Charlie Reilly sent an 88th-minute penalty over the bar, and Euan McGill sent the Lowland League side into the fourth round for the first time ever with a goal 11 minutes into extra-time.