Chelsea captain John Terry has warned his team-mates ahead of the weekend FA Cup clash against Everton.
The Blues beat the Toffees in the final two years ago, and will face off against their Barclays Premier League rivals on Saturday in the fourth round of the competition.
The tie is one of several all top flight clashes, and Terry has warned the Blues that they must be on their guard if they are to progress to the next round.
"We have a great mix of players and one thing you can't take away is the winning mentality," Terry told Chelsea.com.
"Everton are in and out of form but against the big sides, especially at home, they do tend to raise their game so it is going to be a big test for us, but we are certainly up for the fight and we won't give up."
Back-to-back winners of the trophy, Chelsea will be looking to complete a unique treble by making it all the way to Wembley and lifting the trophy.
A 7-0 victory in the third round should fuel Chelsea with confidence, although the sticky Toffees will provide a much tougher test than Ipswich last time out.
The Blues could also be boosted by the return of Frank Lampard, who has returned to full training with Chelsea despite missing the 4-0 victory against Bolton on Monday.
Carlo Ancelotti is expected to play a strong side, and Chelsea will look to continue their quest for a treble this season.
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