--- lua-inet_0.2.0/Makefile
+++ lua-inet_0.2.0.luacheck/Makefile
@@ -3,4 +3,4 @@
 test:
 	lua5.2 ./test.lua
 	lua5.3 ./test.lua
-	find lua/ test/ -iname '*.lua' | xargs luacheck
+	find lua/ test/ -iname '*.lua' | xargs luacheck --std lua52