diff --git a/python/understack-workflows/tests/fixture_nautobot_device.py b/python/understack-workflows/tests/fixture_nautobot_device.py
index 86addd25b..38c38cc95 100644
--- a/python/understack-workflows/tests/fixture_nautobot_device.py
+++ b/python/understack-workflows/tests/fixture_nautobot_device.py
@@ -16,7 +16,7 @@
             description="Integrated NIC 1 Port 1",
             mac_address="D4:04:E6:4F:8D:B4",
             status="Active",
-            ip_address=[],
+            ip_address=None,
             neighbor_device_id="275ef491-2b27-4d1b-bd45-330bd6b7e0cf",
             neighbor_device_name="f20-2-1.iad3.rackspace.net",
             neighbor_interface_id="f9a5cc87-d10a-4827-99e8-48961fd1d773",
@@ -32,7 +32,7 @@
             description="Integrated NIC 1 Port 2",
             mac_address="D4:04:E6:4F:8D:B5",
             status="Active",
-            ip_address=[],
+            ip_address=None,
             neighbor_device_id="05f6715a-4dbe-4fd6-af20-1e73adb285c2",
             neighbor_device_name="f20-2-2.iad3.rackspace.net",
             neighbor_interface_id="2148cf50-f70e-42c9-9f68-8ce98d61498c",
@@ -48,7 +48,7 @@
             description="NIC in Slot 1 Port 1",
             mac_address="14:23:F3:F5:25:F0",
             status="Active",
-            ip_address=[],
+            ip_address=None,
             neighbor_device_id="05f6715a-4dbe-4fd6-af20-1e73adb285c2",
             neighbor_device_name="f20-2-2.iad3.rackspace.net",
             neighbor_interface_id="f72bb830-3f3c-4aba-b7d5-9680ea4d358e",
@@ -64,7 +64,7 @@
             description="NIC in Slot 1 Port 2",
             mac_address="14:23:F3:F5:25:F1",
             status="Active",
-            ip_address=[],
+            ip_address=None,
             neighbor_device_id="275ef491-2b27-4d1b-bd45-330bd6b7e0cf",
             neighbor_device_name="f20-2-1.iad3.rackspace.net",
             neighbor_interface_id="c210be75-1038-4ba3-9923-60050e1c5362",