Cheikhou Kouyate says West Ham must learn from their capitulation against Watford and show their true colours as soon as possible.
The Hammers threw away a 2-0 lead against the Hornets to lose 4-2 last weekend in what was another disappointing result for Slaven Bilic's side at the start of the season.
Ahead of this weekend's trip to West Brom, Kouyate says the side must not repeat the mistakes of the Watford game and get back to winning ways quickly.
He told the club's website: "We should have been able to take the three points from the Watford game. We were leading by two goals, we started really well and I think that we were in control.
"Then when we conceded the goal to take it to 2-1 and then so quickly after that they got the equaliser. We went in at half-time with our heads down slightly.
"We tried to pick ourselves up in the second half, but we were unable to do so and these are errors that we will learn from and won’t be committing again in future matches.
"The most important thing for us to do is to go and get the three points when we play West Brom. We are in real need of points now. So it doesn't matter if it is me or one of my colleagues that scores, what will please us the most is for us to go and get all three points and then push on in the league."