diff --git a/json.lua b/json.lua
index 94e7763..17950cb 100644
--- a/json.lua
+++ b/json.lua
@@ -1,5 +1,5 @@
-local modlib, setmetatable, pairs, assert, error, table, table_insert, table_concat, tonumber, tostring, math_huge, string, type, next
-	= modlib, setmetatable, pairs, assert, error, table, table.insert, table.concat, tonumber, tostring, math.huge, string, type, next
+local modlib, setmetatable, pairs, assert, error, table_insert, table_concat, tonumber, tostring, math_huge, string, type, next
+	= modlib, setmetatable, pairs, assert, error, table.insert, table.concat, tonumber, tostring, math.huge, string, type, next
 
 local _ENV = {}
 setfenv(1, _ENV)
@@ -17,7 +17,7 @@ do
 	null = setmetatable({}, metatable)
 end
 
-local metatable = {__index = self}
+local metatable = {__index = _ENV}
 _ENV.metatable = metatable
 function new(self)
 	return setmetatable(self, metatable)