Frank Onyeka came off the bench to seal victory for Brentford, who defeated Sheffield United 2-0 at the Gtech Community Stadium on Saturday.
It was the midfielder’s first-ever Premier League goal after three seasons for Thomas Frank’s side.
The win was Brentford’s first in their last nine Premier League games.
The Bees took the lead through Ollie Arblaster’s 63rd-minute own goal.
Onyeka took the place of Mathias Jensen on the dot of the 90th minute.
The Nigeria international then fired home the winning goal three minutes later.
Brentford moved to 14th position on the table following the win.