diff --git a/chain.go b/chain.go
index 2a57e44..9be3cde 100644
--- a/chain.go
+++ b/chain.go
@@ -68,7 +68,6 @@ type ObjectType byte
 const (
 	ObjectResource ObjectType = iota
 	ObjectRequest
-	ObjectActor
 )
 
 type ConditionType byte