diff --git a/tests/test_v2d.py b/tests/test_v2d.py
index a8b3ef1bd..8c5680efd 100644
--- a/tests/test_v2d.py
+++ b/tests/test_v2d.py
@@ -101,12 +101,12 @@ def test_limits(self):
         self.assertEqual(otio.schema.V2d.baseTypeEpsilon(), sys.float_info.epsilon)
 
     def test_json_serialization(self):
-        serialized = otio.adapters.otio_json.write_to_string(otio.schema.V2d())
+        serialized = otio.adapters.otio_json.write_to_string(otio.schema.V2d(0.1, 0.2))
         json_v2d = json.loads(serialized)
         self.assertEqual(json_v2d["OTIO_SCHEMA"], "V2d.1")
 
     def test_serialization_round_trip(self):
-        v2d = otio.schema.V2d()
+        v2d = otio.schema.V2d(0.3, 0.4)
         serialized = otio.adapters.otio_json.write_to_string(v2d)
         deserialized = otio.adapters.otio_json.read_from_string(serialized)
         self.assertEqual(v2d, deserialized)