diff --git a/instead/Rules.make.system b/instead/Rules.make.system

index 499a8f4..22c9604 100644

--- a/instead/Rules.make.system

+++ b/instead/Rules.make.system

@@ -1,6 +1,6 @@

 VERSION := 1.7.0

-PREFIX=/usr/local

+PREFIX=/usr

 DESTDIR=

 BIN=$(DESTDIR)$(PREFIX)/bin/

 DATAPATH=$(DESTDIR)$(PREFIX)/share/instead

@@ -16,8 +16,8 @@ SYSTEMSETUP=yes

 ZLIB_CFLAGS=

 ZLIB_LFLAGS=-lz

-LUA_CFLAGS=$(shell pkg-config --cflags lua5.1)

-LUA_LFLAGS=$(shell pkg-config --libs lua5.1)

+LUA_CFLAGS=$(shell pkg-config --cflags lua)

+LUA_LFLAGS=$(shell pkg-config --libs lua)

 # for arch and gentoo linux use this

 #