Benzema opened the scoring as Madrid recorded a 2-1 win in the Champions League to slightly ease the pressure on under-fire coach Julen Lopetegui .
The Frenchman has netted six times in 13 games this season, but Madrid's attack has been criticised.
And the 30-year-old knows he find the net with more regularity, having struck just a total of 31 across the past two seasons.
"Tired? No. I know I have to make more goals," he said, via AS .
"I have it in my head and it gives me a lot of motivation to do it."
Despite the perceived scoring troubles, Benzema's goal helped him into exclusive company in the Champions League, having become one of just three players to score in 14 consecutive editions of Europe's top competition.
He was joined on the scoresheet by Marcelo on Tuesday, helping Madrid move onto six points and are top of Group G.
That standing saw the club announce that Lopetegui would be kept around to manager Sunday's El Clasico, and the French star gave his backing to the under-fire manager.
"We have a lot of confidence in the coach. We are with him. It is not always the coach's fault, it is also the players' fault," he said.
"He puts the players [on] and we have to do more in the field. He's a good coach.
"Like I said, he knows he has the confidence of us, we're going to continue working on things to win."