diff --git a/pkg/vm/interop.go b/pkg/vm/interop.go
index 6247d5a70..b6f6b8221 100644
--- a/pkg/vm/interop.go
+++ b/pkg/vm/interop.go
@@ -93,7 +93,7 @@ func runtimeNotify(vm *VM) error {
 // RuntimeSerialize handles syscalls System.Runtime.Serialize and Neo.Runtime.Serialize.
 func RuntimeSerialize(vm *VM) error {
 	item := vm.Estack().Pop()
-	data, err := serializeItem(item.value)
+	data, err := SerializeItem(item.value)
 	if err != nil {
 		return err
 	} else if len(data) > MaxItemSize {
@@ -109,7 +109,7 @@ func RuntimeSerialize(vm *VM) error {
 func RuntimeDeserialize(vm *VM) error {
 	data := vm.Estack().Pop().Bytes()
 
-	item, err := deserializeItem(data)
+	item, err := DeserializeItem(data)
 	if err != nil {
 		return err
 	}
diff --git a/pkg/vm/serialization.go b/pkg/vm/serialization.go
index af2da3152..81c2fc6b1 100644
--- a/pkg/vm/serialization.go
+++ b/pkg/vm/serialization.go
@@ -17,7 +17,8 @@ const (
 	mapT       stackItemType = 0x82
 )
 
-func serializeItem(item StackItem) ([]byte, error) {
+// SerializeItem encodes given StackItem into the byte slice.
+func SerializeItem(item StackItem) ([]byte, error) {
 	w := io.NewBufBinWriter()
 	EncodeBinaryStackItem(item, w.BinWriter)
 	if w.Err != nil {
@@ -78,7 +79,8 @@ func serializeItemTo(item StackItem, w *io.BinWriter, seen map[StackItem]bool) {
 	}
 }
 
-func deserializeItem(data []byte) (StackItem, error) {
+// DeserializeItem decodes StackItem from the given byte slice.
+func DeserializeItem(data []byte) (StackItem, error) {
 	r := io.NewBinReaderFromBuf(data)
 	item := DecodeBinaryStackItem(r)
 	if r.Err != nil {
diff --git a/pkg/vm/vm_test.go b/pkg/vm/vm_test.go
index cab01864a..5e236cf0a 100644
--- a/pkg/vm/vm_test.go
+++ b/pkg/vm/vm_test.go
@@ -653,7 +653,7 @@ func TestDeserializeUnknown(t *testing.T) {
 	prog := append(getSyscallProg("Neo.Runtime.Deserialize"), byte(opcode.RET))
 	vm := load(prog)
 
-	data, err := serializeItem(NewBigIntegerItem(123))
+	data, err := SerializeItem(NewBigIntegerItem(123))
 	require.NoError(t, err)
 
 	data[0] = 0xFF