diff --git a/doc/api_samples/os-networks/network-show-resp.json b/doc/api_samples/os-networks/network-show-resp.json
index f3d7a18ce84b..afe315561fb5 100644
--- a/doc/api_samples/os-networks/network-show-resp.json
+++ b/doc/api_samples/os-networks/network-show-resp.json
@@ -5,7 +5,7 @@
         "broadcast": "10.0.0.7",
         "cidr": "10.0.0.0/29",
         "cidr_v6": null,
-        "created_at": "2011-08-15 06:19:19.387525",
+        "created_at": "2011-08-15T06:19:19.387525",
         "deleted": false,
         "deleted_at": null,
         "dhcp_start": "10.0.0.3",
@@ -23,7 +23,7 @@
         "priority": null,
         "project_id": "1234",
         "rxtx_base": null,
-        "updated_at": "2011-08-16 09:26:13.048257",
+        "updated_at": "2011-08-16T09:26:13.048257",
         "vlan": 100,
         "vpn_private_address": "10.0.0.2",
         "vpn_public_address": "127.0.0.1",
diff --git a/doc/api_samples/os-networks/networks-list-resp.json b/doc/api_samples/os-networks/networks-list-resp.json
index 90da7c15d458..2c11618a4916 100644
--- a/doc/api_samples/os-networks/networks-list-resp.json
+++ b/doc/api_samples/os-networks/networks-list-resp.json
@@ -6,7 +6,7 @@
             "broadcast": "10.0.0.7",
             "cidr": "10.0.0.0/29",
             "cidr_v6": null,
-            "created_at": "2011-08-15 06:19:19.387525",
+            "created_at": "2011-08-15T06:19:19.387525",
             "deleted": false,
             "deleted_at": null,
             "dhcp_start": "10.0.0.3",
@@ -24,7 +24,7 @@
             "priority": null,
             "project_id": "1234",
             "rxtx_base": null,
-            "updated_at": "2011-08-16 09:26:13.048257",
+            "updated_at": "2011-08-16T09:26:13.048257",
             "vlan": 100,
             "vpn_private_address": "10.0.0.2",
             "vpn_public_address": "127.0.0.1",
@@ -36,7 +36,7 @@
             "broadcast": "10.0.0.15",
             "cidr": "10.0.0.10/29",
             "cidr_v6": null,
-            "created_at": "2011-08-15 06:19:19.885495",
+            "created_at": "2011-08-15T06:19:19.885495",
             "deleted": false,
             "deleted_at": null,
             "dhcp_start": "10.0.0.11",
diff --git a/nova/tests/api/openstack/compute/contrib/test_networks.py b/nova/tests/api/openstack/compute/contrib/test_networks.py
index 732b42b4ca6a..a01edbcbf692 100644
--- a/nova/tests/api/openstack/compute/contrib/test_networks.py
+++ b/nova/tests/api/openstack/compute/contrib/test_networks.py
@@ -15,6 +15,7 @@
 #    under the License.
 
 import copy
+import datetime
 import math
 import uuid
 
@@ -36,7 +37,7 @@ FAKE_NETWORKS = [
     {
         'bridge': 'br100', 'vpn_public_port': 1000,
         'dhcp_start': '10.0.0.3', 'bridge_interface': 'eth0',
-        'updated_at': '2011-08-16 09:26:13.048257',
+        'updated_at': datetime.datetime(2011, 8, 16, 9, 26, 13, 48257),
         'id': 1, 'uuid': '20c8acc0-f747-4d71-a389-46d078ebf047',
         'cidr_v6': None, 'deleted_at': None,
         'gateway': '10.0.0.1', 'label': 'mynet_0',
@@ -48,7 +49,7 @@ FAKE_NETWORKS = [
         'vpn_public_address': '127.0.0.1', 'multi_host': False,
         'dns1': None, 'dns2': None, 'host': 'nsokolov-desktop',
         'gateway_v6': None, 'netmask_v6': None, 'priority': None,
-        'created_at': '2011-08-15 06:19:19.387525',
+        'created_at': datetime.datetime(2011, 8, 15, 6, 19, 19, 387525),
     },
     {
         'bridge': 'br101', 'vpn_public_port': 1001,
@@ -63,7 +64,7 @@ FAKE_NETWORKS = [
         'cidr': '10.0.0.10/29', 'vpn_public_address': None,
         'multi_host': False, 'dns1': None, 'dns2': None, 'host': None,
         'gateway_v6': None, 'netmask_v6': None, 'priority': None,
-        'created_at': '2011-08-15 06:19:19.885495',
+        'created_at': datetime.datetime(2011, 8, 15, 6, 19, 19, 885495),
     },
 ]