diff --git a/chain/types/state.go b/chain/types/state.go
index 9381fa6f3..506840370 100644
--- a/chain/types/state.go
+++ b/chain/types/state.go
@@ -15,7 +15,7 @@ const (
 	StateTreeVersion2
 	// StateTreeVersion3 corresponds to actors v4.
 	StateTreeVersion3
-	// StateTreeVersion4 corresponds to actors v5, v6.
+	// StateTreeVersion4 corresponds to actors v5 and above.
 	StateTreeVersion4
 )