diff --git a/tests/app/invite/test_invite_rest.py b/tests/app/invite/test_invite_rest.py
index 301bf6e69..9cf9c2f13 100644
--- a/tests/app/invite/test_invite_rest.py
+++ b/tests/app/invite/test_invite_rest.py
@@ -85,7 +85,7 @@ def test_create_invited_user_invalid_email(notify_api, sample_service, mocker):
             assert response.status_code == 400
             json_resp = json.loads(response.get_data(as_text=True))
             assert json_resp['result'] == 'error'
-            assert json_resp['message'] == {'email_address': ['Not a valid email address']}
+            assert json_resp['message'] == {'email_address': ['Not a valid email address.']}
             app.celery.tasks.send_email.apply_async.assert_not_called()
 
 
diff --git a/tests/app/notifications/rest/test_send_notification.py b/tests/app/notifications/rest/test_send_notification.py
index a28590c40..e87b6410e 100644
--- a/tests/app/notifications/rest/test_send_notification.py
+++ b/tests/app/notifications/rest/test_send_notification.py
@@ -306,7 +306,7 @@ def test_should_reject_email_notification_with_bad_email(notify_api, sample_emai
             mocked.apply_async.assert_not_called()
             assert response.status_code == 400
             assert data['result'] == 'error'
-            assert data['message']['to'][0] == 'Not a valid email address'
+            assert data['message']['to'][0] == 'Not a valid email address.'
 
 
 @freeze_time("2016-01-01 11:09:00.061258")
@@ -913,7 +913,7 @@ def test_create_template_raises_invalid_request_exception_with_missing_personali
     from app.notifications.rest import create_template_object_for_notification
     with pytest.raises(InvalidRequest) as e:
         create_template_object_for_notification(template, {})
-    assert {'template': ['Missing personalisation: name']} == e.value.message
+    assert {'template': ['Missing personalisation:  Name']} == e.value.message
 
 
 def test_create_template_raises_invalid_request_exception_with_too_much_personalisation_data(
diff --git a/tests/app/user/test_rest.py b/tests/app/user/test_rest.py
index 14b26d387..2de1f7c38 100644
--- a/tests/app/user/test_rest.py
+++ b/tests/app/user/test_rest.py
@@ -470,7 +470,7 @@ def test_send_user_reset_password_should_return_400_when_data_is_not_email_addre
             headers=[('Content-Type', 'application/json'), auth_header])
 
         assert resp.status_code == 400
-        assert json.loads(resp.get_data(as_text=True))['message'] == {'email': ['Not a valid email address']}
+        assert json.loads(resp.get_data(as_text=True))['message'] == {'email': ['Not a valid email address.']}
 
 
 @freeze_time("2016-01-01 11:09:00.061258")