The Italian has insisted that he is satisfied with the striker's performances, while he has compared Isco to Zinedine Zidane.
The former Olympique Lyonnais striker was jeered by fans in their 4-1 win over Getafe at the weekend after missing a number of good chances, yet the Italian has insisted that he is happy with the 25-year-old's performances.
"Benzema has put in some good performances," the Madrid coach said at a press conference. "I like his hard work on the pitch, regardless of whether he scores.
"I don't think it's a big problem for him that the fans whistled him. Sometimes it can even be a good thing, because it can motivate the players."
The former PSG coach then went on to praise Isco and compared the attacking midfielder to former France international Zinedine Zidane.
"Comparing Isco to Zidane is not a bad thing. They have a lot of similarities. Zidane is obviously in a better position to judge and he said Isco isn't there yet, but said he could come close in the future."
Finally, Ancelotti confirmed that Gareth Bale should have recovered from his thigh injury to face Atletico Madrid this Saturday.
"He trained individually today. He should be fit for Saturday's match," the Italian said on Tuesday. "Atletico Madrid are the team that have surprised me the most. They are playing well."