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
 #