-# official debian repository:
-# deb http://ftp.debian.org/debian/ wheezy main contrib non-free
-# deb-src http://ftp.debian.org/debian/ wheezy main contrib non-free
-
-# official debian DE repository:
-# deb http://ftp.de.debian.org/debian/ wheezy main contrib non-free
-# deb-src http://ftp.de.debian.org/debian/ wheezy main contrib non-free
-
-# official debian AT repository:
-# deb http://ftp.at.debian.org/debian/ wheezy main contrib non-free
-# deb-src http://ftp.at.debian.org/debian/ wheezy main contrib non-free
+# backports:
+ deb http://ftp.debian.org/debian/ wheezy-backports main contrib non-free
+ deb-src http://ftp.debian.org/debian/ wheezy-backports main contrib non-free