The Gers, who have already won the Scottish Championship title this season and have gained automatic promotion to the Scottish Premiership, will take on Hibernian in the final of the prestigious cup competition at Hampden Park in Glasgow next month.
The Glasgow giants’ recent form has not been great, with the Ibrox side having not won a single league match since their victory over Old Firm rivals Celtic in the semi-finals of the Scottish Cup on April 17.
Three games without a win will have raised concern about many Rangers supporters about the form of the team heading into the Scottish Cup final, but Warburton has suggested that it is not a problem.
The former Brentford manager, though, has admitted that having a tight squad for the final against Hibernian is a problem.
"We all have to look at ourselves, because that was not Rangers," Warburton told BBC Sport following Rangers’ 1-0 defeat to Livingston away from home at the Tony Macaroni Arena in the Scottish Championship on Tuesday evening. "We have 24 days to get it right, which we will do.”
“The only concern we have got is that we have got a tight squad,” the Rangers boss told The Glasgow Evening Times. “For the cup final, which is our focus now, Billy (King) is cup-tied, Michael (O’Halloran) is cup-tied, Dom Ball is suspended, Harry Forrester is injured.
“We are tight. We have to try and rotate and get the loading right. No excuses. That is not Rangers.”
Winning the Scottish Cup this season will see Rangers complete the treble as they have also clinched the Scottish Challenge Cup this campaign.