Borussia Dortmund playmaker Marco Reus admits the side has not been defending well after they had to come from two goals behind to earn a 2-2 draw with Real Madrid in the Champions League on Wednesday.
The result sees the Bundesliga club qualify top of their group for the knockout rounds of the competition, which is supposed to provide an advantage as it guarantees they will play a side who finished second in their group.
However, history has proven time and again that doesn't ensure your passage into the quarter-finals and Reus believes they will need to defend better if they are to progress in Europe's elite club competition.
"It's nice, of course, especially because this is the Champions League, where every opponent is strong," he told the club's official website.
"But it goes without saying that we also really need to try to defend better as a team because we have conceded too many goals in our last few games.
"Ultimately we haven't really been made to suffer for it because we've scored so many at the other end, but we do need to try to defend better."
Due to the competition's rules that clubs from the same country may not be drawn against each other in the round of 16, Dortmund will face one of Paris Saint-Germain, Benfica, Porto, Sevilla or Manchester City.
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