diff --git a/sys/winnt/Makefile.gcc b/sys/winnt/Makefile.gcc
index e44851950..0ff95de64 100644
--- a/sys/winnt/Makefile.gcc
+++ b/sys/winnt/Makefile.gcc
@@ -833,10 +833,10 @@ $(O)utility.tag: $(INCL)/date.h $(INCL)/onames.h $(INCL)/pm.h \
 
 $(INCL)/nhlua.h:
 	echo /* nhlua.h - generated by top Makefile */ > $@
-	@echo #include "../lib/lua-$(LUA_VERSION)/src/lua.h" >> $@
+	@echo #include "$(LUASRC)/lua.h" >> $@
 	@echo LUA_API int (lua_error) (lua_State *L) NORETURN; >>$@
-	@echo #include "../lib/lua-$(LUA_VERSION)/src/lualib.h" >> $@
-	@echo #include "../lib/lua-$(LUA_VERSION)/src/lauxlib.h" >> $@
+	@echo #include "$(LUASRC)/lualib.h" >> $@
+	@echo #include "$(LUASRC)/lauxlib.h" >> $@
 	@echo /*nhlua.h*/ >> $@
 
 tileutil: $(U)gif2txt.exe $(U)gif2tx32.exe $(U)txt2ppm.exe