diff --git a/app/clients/sms/mmg.py b/app/clients/sms/mmg.py
index 2c9f66bda..f2c2adcd7 100644
--- a/app/clients/sms/mmg.py
+++ b/app/clients/sms/mmg.py
@@ -6,6 +6,12 @@ from app.clients import (STATISTICS_DELIVERED, STATISTICS_FAILURE)
 from app.clients.sms import (SmsClient, SmsClientException)
 
 mmg_response_map = {
+    '00': {
+        "message": 'Delivered',
+        "notification_statistics_status": STATISTICS_DELIVERED,
+        "success": True,
+        "notification_status": 'delivered'
+    },
     '0': {
         "message": 'Delivered',
         "notification_statistics_status": STATISTICS_DELIVERED,
diff --git a/tests/app/notifications/test_rest.py b/tests/app/notifications/test_rest.py
index 8502bbbc6..c96d74069 100644
--- a/tests/app/notifications/test_rest.py
+++ b/tests/app/notifications/test_rest.py
@@ -1360,11 +1360,8 @@ def test_firetext_callback_should_update_multiple_notification_status_sent(notif
 
 def test_process_mmg_response_return_200_when_cid_is_send_sms_code(notify_api):
     with notify_api.test_request_context():
-        data = json.dumps({"reference": "10100164",
-                           "CID": "send-sms-code",
-                           "MSISDN": "447775349060",
-                           "status": 00,
-                           "deliverytime": "2016-04-05 16:01:07"})
+        data = '{"reference": "10100164", "CID": "send-sms-code", "MSISDN": "447775349060", "status": "00", \
+        "deliverytime": "2016-04-05 16:01:07"}'
 
         with notify_api.test_client() as client:
             response = client.post(path='notifications/sms/mmg',
@@ -1381,7 +1378,7 @@ def test_process_mmg_response_returns_200_when_cid_is_valid_notification_id(noti
         data = json.dumps({"reference": "mmg_reference",
                            "CID": str(sample_notification.id),
                            "MSISDN": "447777349060",
-                           "status": 00,
+                           "status": "00",
                            "deliverytime": "2016-04-05 16:01:07"})
 
         response = client.post(path='notifications/sms/mmg',