Holger Badstuber says no-one in the German camp will be underestimating surprise quarter-finalists Greece as they prepare to meet at Euro 2012.
Germany have been impressive at the tournament so far, winning all three of their group games against Portugal, Denmark and Netherlands.
After Spain's below par showing against Croatia many pundits are pointing towards Germany as possible winners, but Badstuber insists complacency won't creep in despite Greece never having beaten their last eight opponents.
He said: "They have never beaten us, but the important thing is that we get it right in our heads and don't take them lightly. It would be a primary error for us to go into that game thinking we have already won, that would be a major mistake.
"They have beaten Russia, who had been a good team until then, so we are warned and are preparing well. They were practically out and now they are right back in and in the quarter-finals."
Just like they did en-route to their triumph at Euro 2004, Greece's modus operandi is based on a tight defence and hitting teams on the break. Badstuber knows Germany will have to be wary, despite having the greater quality in their side.
He added: "We have every reason to be self-confident against Greece, but they will be tough to play against and will try and hit us on the counter.
"It would be a primary error for us to go into that game thinking we have already won, that would be a major mistake. They aren't seen as one of the game's powerhouses, but have already beaten Russia and they were one of the favourites."
Badstuber is pleased with his own form at the tournament and he has struck up a good partnership with Mats Hummels.
"I think we have done a good job so far," he said. "Of course we still have room for improvement, like the whole team, but we can be pleased with our defence against teams like Portugal and Holland.
"Maybe our defensive understanding comes from the fact we were both brought up in the same (Bayern Munich) school. We are both guys who understand football, this style, this defensive work and we complement each other."© ESPN