Uhttpd and UTF-8 directory names

uhttpd does not handle directories with UTF-8 names correctly in the dirlists.

cd /www/test
ls -l
drwxr-xr-x    2 root     root             0 Dec 21 08:40 file_žšč

when I go to the displayed subdirectory link isžšč/
which, when clicked, produces Not Found error
if I manually fix the URL tožšč , the directory
is listed correctly (except wrong title " Index of /test/file_žšč/")

is there a setting for the default charset in directory listings?