Slaven Bilic hailed West Ham's last-gasp 1-0 victory over Sunderland at the London Stadium as an "extremely important" result.
The Hammers have struggled at their new home this season, conceding four in defeat to Watford and then losing 3-0 to Southampton.
But they secured victory against struggling Sunderland thanks to Winston Reid's strike with almost the last kick of the match.
"It was extremely important for us," Hammers boss Bilic told Sky Sports. "Nothing can lift you like a win, confidence wise.
"To get six points in two games and keep clean sheets is a big boost for us. We kept trying, kept the shape and were rewarded with the goal.
"We pushed a bit more in the last 15 minutes, changed a few things, and we just deserved it."
There was a question of whether Reid's goal should have been ruled out for offside, with a couple of players seemingly beyond the last man and blocking Jordan Pickford's view.
But Bilic added: "It's not offside, it's very difficult to see but I wanted to have a look and if you freeze the picture you can see (Jonathan) Calleri's boots were not in an offside position. I can feel for them but it wasn't offside."
The West Ham boss also hailed the quick-thinking of Dimitri Payet and Mark Noble, who took the corner short in the 94th minute before playing it to Reid on the edge of the box.
"It was a bit of an unusual way to score a goal, not a training ground combination," said Bilic. "But they made a bit of a mistake because they were all in the box and expected a cross and it was a good decision from Dimi and Mark Noble to pass it and come in to a good area without them pressing up.
"It was a great strike, unusual but very important for us."