Germany coach Joachim Low was delighted with his team's 6-2 win against Austria in Friday's Euro 2012 qualifier.
The trainer praised his side for being the first nation to qualify for next summer's tournament after hosts Poland and Ukraine.
"We managed to qualify comfortably - we could have not done so earlier," he said according to Kicker. However, he added: "We must now keep up the intensity in the next few games."
Low also addressed concerns that his team's defence may be a bit fragile, having conceded twice.
He added: "When you play as aggressively as we do, then you also concede the odd goal. Today we twice failed to act properly in defence.
"I think the Austrians only shot on goal twice."
Low was pleased with his team's ability to retain their quality even after substitutions. Andre Schurrle and Mario Gotze were late additions to replace goal scorers Lukas Podolski and Mesut Ozil, but both of the additions managed to find themselves on the score sheet before full time.
He continued: "We have been working for a long time to have a team in which the players can be replaced. This must be so if you want to win something and be world class."
Germany next head to Poland to face the future Euro hosts on Tuesday in Gdansk.