diff --git a/code/class.lua b/code/class.lua
index fe640f9..76a7e7d 100644
--- a/code/class.lua
+++ b/code/class.lua
@@ -9,7 +9,7 @@ end
 function getAncestors(self)
 	local family = self
 	local list = {}
-	while family.__index ~= nil do
+	while family.__index ~= nil and family.__index ~= family do
 		family = family.__index
 		table.insert(list,family)
 	end