Apparently LANG was changed and do not correspond ones in the %post anymore

From the .spec file:

%post
if [ "$LANG" = "ru_RU.KOI8-R" -o "$LANG" = "uk_UA.KOI8-U" ]; then
    /usr/sbin/chkfontpath -q --first -a /usr/share/fonts/%{ISONAME}/misc
else
    /usr/sbin/chkfontpath -q -a /usr/share/fonts/%{ISONAME}/misc
fi

In reality:
$ echo $LANG
ru_RU.koi8r

I am not sure what is the correct current spelling for "uk_UA.KOI8-U" is. 
Please verify.