diff --git a/kv/kvcfg/accessors_config.go b/kv/kvcfg/accessors_config.go
index 5c68771e4..7a9dae434 100644
--- a/kv/kvcfg/accessors_config.go
+++ b/kv/kvcfg/accessors_config.go
@@ -25,7 +25,8 @@ import (
 type ConfigKey []byte
 
 var (
-	HistoryV3 = ConfigKey("history.v3")
+	HistoryV3      = ConfigKey("history.v3")
+	TransactionsV3 = ConfigKey("transactions.v3")
 )
 
 func (k ConfigKey) Enabled(tx kv.Tx) (bool, error) { return kv.GetBool(tx, kv.DatabaseInfo, k) }