diff --git a/core/state/access_list.go b/core/state/access_list.go
index 419469134..942829787 100644
--- a/core/state/access_list.go
+++ b/core/state/access_list.go
@@ -134,3 +134,36 @@ func (al *accessList) DeleteSlot(address common.Address, slot common.Hash) {
 func (al *accessList) DeleteAddress(address common.Address) {
 	delete(al.addresses, address)
 }
+
+// Copy creates an independent copy of an accessList.
+func (dest *accessList) Append(src *accessList) *accessList {
+	for addr, sIdx := range src.addresses {
+		if i, present := dest.addresses[addr]; present {
+			// dest already has addr.
+			if sIdx >= 0 {
+				// has slot in list
+				if i == -1 {
+					dest.addresses[addr] = len(dest.slots)
+					slotmap := src.slots[sIdx]
+					dest.slots = append(dest.slots, slotmap)
+				} else {
+					slotmap := src.slots[sIdx]
+					for hash := range slotmap {
+						if _, ok := dest.slots[i][hash]; !ok {
+							dest.slots[i][hash] = struct{}{}
+						}
+					}
+				}
+			}
+		} else {
+			// dest doesn't have the address
+			dest.addresses[addr] = -1
+			if sIdx >= 0 {
+				dest.addresses[addr] = len(dest.slots)
+				slotmap := src.slots[sIdx]
+				dest.slots = append(dest.slots, slotmap)
+			}
+		}
+	}
+	return dest
+}
diff --git a/core/state/state_object.go b/core/state/state_object.go
index d2f988c6c..ac0b95dac 100644
--- a/core/state/state_object.go
+++ b/core/state/state_object.go
@@ -1004,7 +1004,7 @@ func (s *stateObject) GetCommittedStateNoUpdate(key common.Hash) common.Hash {
 func (s *stateObject) fixUpOriginAndResetPendingStorage() {
 	if s.db.isParallel && s.db.parallel.isSlotDB {
 		mainDB := s.db.parallel.baseStateDB
-		origObj := mainDB.getStateObjectNoUpdate(s.address)
+		origObj := mainDB.getStateObject(s.address)
 		s.storageRecordsLock.Lock()
 		if origObj != nil && origObj.originStorage.Length() != 0 {
 			// There can be racing issue with CopyForSlot/LightCopy
diff --git a/core/state/statedb.go b/core/state/statedb.go
index 7b959f444..e814343bf 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -2652,8 +2652,9 @@ func (s *StateDB) MergeSlotDB(slotDb *ParallelStateDB, slotReceipt *types.Receip
 	for hash, preimage := range slotDb.preimages {
 		s.preimages[hash] = preimage
 	}
+
 	if s.accessList != nil && slotDb.accessList != nil {
-		s.accessList = slotDb.accessList.Copy()
+		s.accessList.Append(slotDb.accessList)
 	}
 
 	for k := range slotDb.snapDestructs {