diff --git a/PythonClient/airsim/types.py b/PythonClient/airsim/types.py
index 7aef005549..b8ed78cf45 100644
--- a/PythonClient/airsim/types.py
+++ b/PythonClient/airsim/types.py
@@ -267,7 +267,7 @@ class CollisionInfo(MsgpackMixin):
     impact_point = Vector3r()
     position = Vector3r()
     penetration_depth = 0.0
-    time_stamp = 0.0
+    time_stamp = np.uint64(0)
     object_name = ""
     object_id = -1
 
diff --git a/PythonClient/tests/__init__.py b/PythonClient/tests/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/PythonClient/tests/test_collision_info_types.py b/PythonClient/tests/test_collision_info_types.py
new file mode 100644
index 0000000000..eacf5c186a
--- /dev/null
+++ b/PythonClient/tests/test_collision_info_types.py
@@ -0,0 +1,17 @@
+import unittest
+
+import numpy as np
+
+from airsim.types import CollisionInfo
+
+
+class TestCollisionInfoDefaults(unittest.TestCase):
+    def test_timestamp_uint64_default(self):
+        c = CollisionInfo()
+        self.assertTrue(isinstance(c.time_stamp, (int, np.integer)))
+        self.assertEqual(int(c.time_stamp), 0)
+        self.assertFalse(c.has_collided)
+
+
+if __name__ == "__main__":
+    unittest.main()