diff --git a/Makefile b/Makefile
index aa76d2c..247f3df 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,15 @@
-PREFIX   =
-MANDIR   = ${PREFIX}/usr/share/man
-BINDIR   = ${PREFIX}/usr/local/bin
-
-install: all
-	mkdir -p ${BINDIR} ${MANDIR}
-	cp ndppd ${BINDIR}
-	chmod +x ${BINDIR}/ndppd
-	cp ndppd.1.gz ${MANDIR}/man1
-	cp ndppd.conf.5.gz ${MANDIR}/man5
+MANDIR  = ${DESTDIR}/usr/share/man
+SBINDIR = ${DESTDIR}/usr/sbin
 
 all: ndppd ndppd.1.gz ndppd.conf.5.gz
 
+install: all
+	mkdir -p ${SBINDIR} ${MANDIR} ${MANDIR}/man1 ${MANDIR}/man5
+	cp ndppd ${SBINDIR}
+	chmod +x ${SBINDIR}/ndppd
+	cp ndppd.1.gz ${MANDIR}/man1
+	cp ndppd.conf.5.gz ${MANDIR}/man5
+
 ndppd:
 	cd src && make all && cp ndppd ..