diff --git a/app/clients/sms/mmg.py b/app/clients/sms/mmg.py
index f2c2adcd7..b28fdd4a6 100644
--- a/app/clients/sms/mmg.py
+++ b/app/clients/sms/mmg.py
@@ -6,13 +6,7 @@ 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': {
+    '3': {
         "message": 'Delivered',
         "notification_statistics_status": STATISTICS_DELIVERED,
         "success": True,
diff --git a/tests/app/clients/test_mmg.py b/tests/app/clients/test_mmg.py
index 0ed3fea3c..60210afd8 100644
--- a/tests/app/clients/test_mmg.py
+++ b/tests/app/clients/test_mmg.py
@@ -2,7 +2,7 @@ from app.clients.sms.mmg import get_mmg_responses
 
 
 def test_should_return_correct_details_for_delivery():
-    response_dict = get_mmg_responses('0')
+    response_dict = get_mmg_responses('3')
     assert response_dict['message'] == 'Delivered'
     assert response_dict['notification_status'] == 'delivered'
     assert response_dict['notification_statistics_status'] == 'delivered'
diff --git a/tests/app/notifications/test_rest.py b/tests/app/notifications/test_rest.py
index c96d74069..3a7dff6ac 100644
--- a/tests/app/notifications/test_rest.py
+++ b/tests/app/notifications/test_rest.py
@@ -1360,7 +1360,7 @@ 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 = '{"reference": "10100164", "CID": "send-sms-code", "MSISDN": "447775349060", "status": "00", \
+        data = '{"reference": "10100164", "CID": "send-sms-code", "MSISDN": "447775349060", "status": "3", \
         "deliverytime": "2016-04-05 16:01:07"}'
 
         with notify_api.test_client() as client:
@@ -1378,7 +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": "3",
                            "deliverytime": "2016-04-05 16:01:07"})
 
         response = client.post(path='notifications/sms/mmg',