diff --git a/core/state/statedb.go b/core/state/statedb.go
index 9866195874..339211b95a 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -722,9 +722,6 @@ func (s *StateDB) Copy() *StateDB {
 	if s.accessEvents != nil {
 		state.accessEvents = s.accessEvents.Copy()
 	}
-	if s.stateReadList != nil {
-		state.stateReadList = s.stateReadList.Copy()
-	}
 	// Deep copy cached state objects.
 	for addr, obj := range s.stateObjects {
 		state.stateObjects[addr] = obj.deepCopy(state)