The Scot has claimed he has no issue with the striker, despite electing to leave him on the substitutes' bench for the second week running as his side lost to Tottenham
Goals from Steven Caulker and Aaron Lennon gave Spurs all three points in a routine home win against the Villans at White Hart Lane.
But Lambert believes he took the correct decision in opting for Christian Benteke up top, due to the Belgian's qualities as a lone frontman.
“It’s the decision I made. It’s the system we play and it was the right decision in my view", Lambert told Sky Sports.
“I just think Darren is a better player with someone up beside him. Christian is a big, strong player who can lead the line as a targetman.
“When you pick a team, you’ve got to think of the opposition you’re playing as well.
“Darren has been fine, I would tell you if he wasn’t. I understand his frustration but I try and pick a side that might win us the game. He will play games, I need everybody. I’m not going to make a mountain out of a molehill.”
Despite the defeat, the former Norwich City boss was content with Villa's performance, believing they were unfortuante to come away with nothing.
“I thought the big moment was Christian’s chance," he added. "When you have big chances like that at a place like this, you’ve got to score. We had a great chance to go 1-0 up, it was a big moment to miss that chance.
“You need a bit of luck somewhere along the line. I thought we were well in the game, they came at us from all angles but we more than held our own.
“I’m not disappointed with the way we played, we were playing one of the best teams in the country."