Carlo Ancelotti wants a big improvement from Real Madrid when they face city rivals Atletico in the crunch derby at the Bernabeu this weekend.
Los Blancos come into the match on the back of a battling and controversial win over struggling Elche on Wednesday night.
The Andalusian side gave as good as they got throughout the 90 minutes and grabbed a late equaliser only to be beaten by a controversial stoppage-time penalty from Cristiano Ronaldo.
Despite being far from their best, Real took the three points which moved them to within two of Atletico and Barcelona at the top of the Primera Division table, but Ancelotti wants to see a vast improvement on Saturday night.
"We need to play better," he said.
"We won't win the derby if we play like we have done in this match, that's why I think we need to improve, play with more intensity and personality."
The last time these two sides met was in last year's Copa del Rey final when Atletico claimed an historic victory at the Bernabeu, beating their near neighbours for the first time in 14 years.
Joao Miranda scored the winner in extra-time as Real were left with just the Super Cup to show for their season's efforts and goalkeeper Diego Lopez is keen on revenge.
"We are hungry and we want to play well," he said.
"Especially because of what happened last year in the Copa del Rey."
He added on bwin's youtube channel: "It is a very important game but the game in Elche was important and so were the other games we've played, so it is another match.
"It is one in which we have to give everything, but with the difficulty that we are playing against a great team.
"They (Atletico) have built a very strong squad and a very united group of players who know what they're playing at and what their strengths are.
"We have to exploit the small deficiencies they may have in their game and have faith in our own quality and our football and try as impose that on them."
Gareth Bale missed out against Elche due to his ongoing thigh problem but is back in training and could start alongside Ronaldo, who has nine goals in his last five games.
Bale's return could see Karim Benzema or Angel di Maria drop to the bench.
Atletico have enjoyed a 100 per cent start to their league campaign and were only beaten on away goals by Barca in the Super Cup.
Central defender Diego Godin now hopes they can carry that momentum into the derby.
"We arrive with great confidence, playing well, scoring goals, (it) is the best way to tackle a derby," he told Radio Marca.
"We know the way to win at the Bernabeu. We respect every opponent but we will work hard in all areas.
"We're excited to play a great game, physically and technically.
"Real Madrid are the favourites due to their budget, and because of recent derbies played at the Bernabeu, but we arrive in a great state."
Midfielder Mario Suarez is a doubt for the visitors with a knee problem after coming off injured in the 2-1 win over Osasuna but Rojiblancos coach Diego Simeone has no other new worries.