A debut goal from loanee Dale Bennett helped Brentford to victory over struggling Chesterfield.
Sam Saunders handed the hosts the lead when he curled a free-kick into the top corner of the goal.
The Spireites levelled soon after when on-loan striker Leon Clarke pounced on defensive indecision to hammer home from close range.
But Watford's Bennett headed in Saunders' cross late on to give his new side their first home win since August.
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Brentford boss Uwe Rosler told BBC London 94.9:
"He (Bennett) was very good today and he is a warrior, he didn't want to go off and that showed the quality the man has.
"We got a bit scared to win after taking the lead, and they punished us with a goal.
"Unfortunately we have not won for a while at home but you can not say that we had not shown any effort."
Chesterfield manager John Sheridan told BBC Radio Sheffield:
"It's a very poor result again, a poor outcome. I definitely felt we were well in the game, I really did feel comfortable. I thought we started the game really sloppily and the goal was obviously very poor again on our part because we were in possession of the ball and as usual we give it away very cheaply.
"I think once we scored we got right back into the game and we looked the better side.
"I look at myself but I'm going to stay positive, I'm doing the right things, people are going to question me but I don't mind that.
"In the second half I was very comfortable, I thought we had one or two opportunities where we could have done a lot better but we do the same old thing as we always do, we shoot ourselves in the foot. It's just a basic goal and again we're in possession of the ball and it's people making the wrong decisions and we're getting punished."