The 26-year-old played the full 90 minutes in all three of the team's Group G clashes, which saw them finish top of the group.
The Schalke 04 defender told FIFA.com: "It's perfectly normal for people to discuss it before a World Cup, after all it's not my normal position. But the coach opted to field four good centre-backs and it's worked out.
"Personally, I've done a good job in all three games so I don't think there's any room for criticism there.
"I really don't mind where I play. I've made no secret of the fact that my qualities are best suited to playing centre-back but if I'm more use to the team as a full-back, then I'm happy to be out on the pitch and help us be successful."
Germany will play Algeria in the round of 16 on Monday.