diff --git a/core/state/managed_state.go b/core/state/managed_state.go
index 9e82e7eea5..ad73dc0dc6 100644
--- a/core/state/managed_state.go
+++ b/core/state/managed_state.go
@@ -39,7 +39,7 @@ type ManagedState struct {
 // ManagedState returns a new managed state with the statedb as it's backing layer
 func ManageState(statedb *StateDB) *ManagedState {
 	return &ManagedState{
-		StateDB:  statedb,
+		StateDB:  statedb.Copy(),
 		accounts: make(map[common.Address]*account),
 	}
 }