--- a/Makefile
+++ b/Makefile
@@ -3,15 +3,15 @@
 INSTALL		?= install
 INSTALL_PROGRAM	?= $(INSTALL)
 INSTALL_DATA	?= $(INSTALL) -m 644
-LUA_V		?= 5.1
-LUA_LDIR	?= /usr/share/lua/$(LUA_V)
-LUA_CDIR	?= /usr/lib/lua/$(LUA_V)
+LUA_V		?= 5.2
+LUA_LDIR	?= $(PREFIX)/share/lua/$(LUA_V)
+LUA_CDIR	?= $(PREFIX)/lib/lua/$(LUA_V)
 T		= lxp
 LIBNAME		= $(T).so
 
 COMMON_CFLAGS	 = -g -pedantic -Wall -O2 -fPIC -DPIC -ansi
-LUA_INC		?= -I/usr/include/lua$(LUA_V)
-EXPAT_INC	?= -I/usr/include
+LUA_INC		?= -I$(PREFIX)/include
+EXPAT_INC	?= -I$(PREFIX)/include
 CF		 = $(LUA_INC) $(EXPAT_INC) $(COMMON_CFLAGS) $(CFLAGS)
 
 EXPAT_LIB	 = -lexpat