help, error with debian/tmp

Hello all

Please, help me, what i do wrong?

I try build debian package, but see error:

ivan <at> ivan1986:/data/soft/pkg/astral/libastral-0.4% dpkg-buildpackage
...
install -s 
libastral.so /data/soft/pkg/astral/libastral-0.4/debian/tmp/usr/lib/
install: указанная цель 
`/data/soft/pkg/astral/libastral-0.4/debian/tmp/usr/lib/' не является 
каталогом: Нет такого файла или каталога

This is a small test library from http://sourceforge.net/projects/libastralso
i run dh_make, 
select type library, 
unpack source code from tgz,
fix prefix in Makefile:
PREFIX = $(DESTDIR)/usr

install section is:
install:
	install -s libastral.so ${PREFIX}/lib/
	install -s astral_test ${PREFIX}/bin/

my control file is:

Source: libastral
Priority: extra