german sort is wrong

Hallo,

i make initdb with --locale='de_DE.utf8'.

the result is:

The database cluster will be initialized with locale de_DE.utf8.
The default database encoding has accordingly been set to UTF8.
The default text search configuration will be set to "german".

when i make a sort this is the result:

select * from sgvs.test order by bezeichnung;

id | bezeichnung | schlagworte
----+-------------+-------------
11 | Anton |
8 | Ätna |
10 | Erna |
2 | Kammer |
6 | Kanten |
1 | Käse |
4 | Köbern |
3 | Kümmern |
5 | Kuno |
9 | Möbel |
7 | Zuber |

in german this is wrong. what is the problem?