Birmingham City manager Lee Clark said that his side "have to change" following their FA Cup loss to Swansea on Saturday.
Lee Novak gave Birmingham the lead before a Wilfried Bony brace sent the Swans through to the fifth round.
Clark told reporters: "We've played well, and we've passed the ball well as we have all season.
"But we've now lost three out of four, so we have to change.
"We've got to find a way to win football matches again."
Birmingham host Leicester in their next Championship game on Tuesday.
