Arsenal 's victory over Tottenham will mark the start of a good run, says Arsène Wenger But Wenger has been pleased with the improvements made by his side and believes the defence is getting back towards its best. "We have shown quality, spirit and a lot of movement, and that is what we want from our team," he said. I believe it is always easier to correct the defensive side than getting your team to score goals. When you score goals you always have a chance. I am confident that the defence will be quite sound once everybody is used to playing with each other. We won many balls (against Tottenham) as a team and we want to continue to work on that. Goalkeeper Wojciech Szczesny returned from injury in time to face Spurs and believes the victory came at the perfect time for Arsenal as they target progression in Europe following their recent blip. We couldn't get a better time to play that game. We are buzzing today, we can't wait for the next game. We're confident," he said. We've had a couple of poor results recently, but we're back on track and we're confident that we can get the three points and qualify for the knockout stages, which is the least you can ask from us - We want to make sure we do the job properly and qualify. Szczesny admitted he was aware of a little unrest amongst Arsenal supporters but praised them for the way they backed the side throughout the win over their neighbours. He said: "I know that over the last few weeks the fans might have been frustrated, and we understand that completely. I think the team and the fans work as a unit, and they were fantastic, they helped us to get a boost before the game and helped keep us going.