--- Makefile.orig	2017-11-25 13:46:52 UTC
+++ Makefile
@@ -1,11 +1,12 @@
-PKGNAME		= mons
-PKGDESC		= POSIX Shell script to quickly manage 2-monitors display.
+PKGNAME		=	mons
+PKGDESC		=	POSIX Shell script to quickly manage 2-monitors display.
 
-LICENSEDIR  = $(DESTDIR)/usr/share/licenses/$(PKGNAME)
-MANDIR		= $(DESTDIR)/usr/share/man/man1
-BINDIR  	= $(DESTDIR)/usr/bin
-LIBDIR  	= $(DESTDIR)/usr/lib/libshlist
-LIB     	= libshlist/liblist.sh
+PREFIX		=	/usr
+LICENSEDIR	=	$(DESTDIR)$(PREFIX)/share/licenses/$(PKGNAME)
+MANDIR		=	$(DESTDIR)$(PREFIX)/share/man/man1
+BINDIR		=	$(DESTDIR)$(PREFIX)/bin
+LIBDIR		=	$(DESTDIR)$(PREFIX)/lib/libshlist
+LIB		=	libshlist/liblist.sh
 
 install:
 	@if ! [ -r "$(LIB)" ]; then \