RSS feed conatins non UTF-8 chars

Hi,

my RSS feed reader complains that the feed is not UTF-8 although it
claims to be.

http://feedvalidator.org/check.cgi?url=http%3A%2F%2Fwww.kernel.org%2Fgit
%2Fgitweb.cgi%3Fp%3Dlinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git%3Ba%
3Drss

Best,
  Norbert