diff --git a/deepdiff/delta.py b/deepdiff/delta.py
index 8bafc9a6..d2b1dd8e 100644
--- a/deepdiff/delta.py
+++ b/deepdiff/delta.py
@@ -98,11 +98,24 @@ def _deserializer(obj, safe_to_import=None):
                     for path, op_codes in result['_iterable_opcodes'].items():
                         _iterable_opcodes[path] = []
                         for op_code in op_codes:
-                            _iterable_opcodes[path].append(
-                                Opcode(
-                                    **op_code
+                            if isinstance(op_code, list):
+                                # Handle list format: [tag, t1_from, t1_to, t2_from, t2_to, old_values, new_values]
+                                _iterable_opcodes[path].append(
+                                    Opcode(
+                                        tag=op_code[0],
+                                        t1_from_index=op_code[1],
+                                        t1_to_index=op_code[2], 
+                                        t2_from_index=op_code[3],
+                                        t2_to_index=op_code[4],
+                                        old_values=op_code[5],
+                                        new_values=op_code[6]
+                                    )
+                                )
+                            else:
+                                # Handle dict format
+                                _iterable_opcodes[path].append(
+                                    Opcode(**op_code)
                                 )
-                            )
                     result['_iterable_opcodes'] = _iterable_opcodes
                 return result
 
diff --git a/tests/test_delta.py b/tests/test_delta.py
index 81a05784..2a945581 100644
--- a/tests/test_delta.py
+++ b/tests/test_delta.py
@@ -2436,9 +2436,9 @@ def test_list_of_alphabet_and_its_delta(self):
         flat_rows = delta2.to_flat_rows()
 
         expected_flat_rows = [
-            FlatDeltaRow(path=[3], action='values_changed', value='X', old_value='D', type=str, old_type=str, new_path=[2]),
-            FlatDeltaRow(path=[6], action='values_changed', value='Z', old_value='G', type=str, old_type=str),
-            FlatDeltaRow(path=[5], action='values_changed', value='Y', old_value='F', type=str, old_type=str),
+            FlatDeltaRow(path=[3], action=FlatDataAction.values_changed, value='X', old_value='D', type=str, old_type=str, new_path=[2]),
+            FlatDeltaRow(path=[6], action=FlatDataAction.values_changed, value='Z', old_value='G', type=str, old_type=str),
+            FlatDeltaRow(path=[5], action=FlatDataAction.values_changed, value='Y', old_value='F', type=str, old_type=str),
             FlatDeltaRow(path=[], action=FlatDataAction.iterable_items_deleted, value=[], old_value=['A'], type=list, old_type=list, t1_from_index=0, t1_to_index=1, t2_from_index=0, t2_to_index=0),
             FlatDeltaRow(path=[], action=FlatDataAction.iterable_items_equal, value=None, old_value=None, type=type(None), old_type=type(None), t1_from_index=1, t1_to_index=3, t2_from_index=0, t2_to_index=2),
             FlatDeltaRow(path=[], action=FlatDataAction.iterable_items_replaced, value=['X'], old_value=['D', 'E', 'F', 'G'], type=list, old_type=list, t1_from_index=3, t1_to_index=7, t2_from_index=2, t2_to_index=3),