diff --git a/chain/types/state.go b/chain/types/state.go
index f6a3472f8..c14836ee7 100644
--- a/chain/types/state.go
+++ b/chain/types/state.go
@@ -9,7 +9,7 @@ type StateTreeVersion uint64
 const (
 	// StateTreeVersion0 corresponds to actors < v2.
 	StateTreeVersion0 StateTreeVersion = iota
-	// StateTreeVersion1 corresponds to actors [v2, v3)
+	// StateTreeVersion1 corresponds to actors v2
 	StateTreeVersion1
 	// StateTreeVersion2 corresponds to actors >= v3.
 	StateTreeVersion2