Liverpool centre-half Virgil van Dijk admits the players must discuss their defensive issues.
Jurgen Klopp's men got lucky in beating Leicester 2-1 to maintain their Champions League challenge with The Foxes missing chances and then presenting Liverpool with two own goals through Wout Faes.
Van Dijk called the defensive performance "very poor in moments" and says they'll have a look at it in training before travelling to London.
"We got through the game which is very important but there are things to improve on which we will discuss," he said.
"We know we can do better and it's going to be a tough game in London. Brentford will be full of confidence (after beating West Ham)."