PivotTable: Problem with AutoSort (from A-Z) => first value is not sorted

Hello, I got the following PivotTable:

mtovb5.png (http://i61.tinypic.com/mtovb5.png )

The problem is that FR is before all the other values. Also when I sort it from Z-A "FR" is at the very end.

What am I doing wrong here?

Thanks!