In August 2005, he was part of the national team's triumphant performance at the Valeri Lobanovsky Memorial Tournament 2005. During 2006 FIFA World Cup qualification, he played in the most important games for Poland and contributed to Poland's qualification to the 2006 FIFA World Cup in Germany. As a result of another injury during the spring of 2006, he was unable to play regularly at his club, Bayer Leverkusen. This was evident in his poor form during the 2006 FIFA World Cup and was one of the poorest performers in the Polish team as they lost 2–0 to the surprising Ecuador and 1–0 to hosts Germany. After a disappointing 2005–06 season, he moved to VfL Wolfsburg.