Borussia Dortmund striker Robert Lewandowski has revealed that he was pleased with his side's 1-0 win over Werder Bremen on Friday night, but warned that they can play a lot better.

Lewandowski said that Werder were a good team so a win at all is a good result and has targeted a more successful season than last in which Dortmund were beaten to both the Bundesliga and Champions League by rivals Bayern Munich.

"I think [it was a deserved win]," he told the club's official website. "Werder Bremen are a very good side, which is why it was a very difficult game for me and the rest of the team.

"Therefore, I´m happy about the three points and of course my goal. Our performance was okay, though I think we can play better. But nine points from three games is good.

"This is my fourth season with BVB and I hope that it will be even better than the last one."

Lewandowski is widely expected to join Bayern next season upon the expiry of his contract.