diff --git a/app/main/views/invites.py b/app/main/views/invites.py
index 4b271e29c..c9052303d 100644
--- a/app/main/views/invites.py
+++ b/app/main/views/invites.py
@@ -17,13 +17,13 @@ from app import (
 def accept_invite(token):
     try:
         invited_user = invite_api_client.accept_invite(token)
-        existing_user = user_api_client.get_user_by_email(invited_user['email_address'])
+        existing_user = user_api_client.get_user_by_email(invited_user.email_address)
 
         if existing_user:
-            user_api_client.add_user_to_service(invited_user['service'],
-                                                existing_user.id,
-                                                invited_user)
-            return redirect(url_for('main.service_dashboard', service_id=invited_user['service']))
+            user_api_client.add_user_to_service(invited_user.service,
+                                                existing_user.id)
+
+            return redirect(url_for('main.service_dashboard', service_id=invited_user.service))
         else:
             # TODO implement registration flow for new users
             abort(404)
diff --git a/app/notify_client/user_api_client.py b/app/notify_client/user_api_client.py
index 5bb744a91..b1054f769 100644
--- a/app/notify_client/user_api_client.py
+++ b/app/notify_client/user_api_client.py
@@ -1,3 +1,5 @@
+import json
+
 from notifications_python_client.notifications import BaseAPIClient
 from notifications_python_client.errors import HTTPError
 
@@ -86,7 +88,7 @@ class UserApiClient(BaseAPIClient):
         resp = self.get(endpoint)
         return [User(data) for data in resp['data']]
 
-    def add_user_to_service(self, service_id, user_id, invited_user):
+    def add_user_to_service(self, service_id, user_id):
         endpoint = '/service/{}/users/{}'.format(service_id, user_id)
-        resp = self.post(endpoint, data=invited_user)
+        resp = self.post(endpoint)
         return User(resp['data'], max_failed_login_count=self.max_failed_login_count)
diff --git a/app/templates/views/manage-users.html b/app/templates/views/manage-users.html
index b3adee4be..44a0b39e5 100644
--- a/app/templates/views/manage-users.html
+++ b/app/templates/views/manage-users.html
@@ -45,7 +45,7 @@ Manage users – GOV.UK Notify
       {% endcall %}
       {{ boolean_field(item.has_permissions('send_messages')) }}
       {{ boolean_field(item.has_permissions('manage_service')) }}
-      {{ boolean_field(item.has_permissions('api_keys')) }}
+      {{ boolean_field(item.has_permissions('manage_api_keys')) }}
       {% call field(align='right') %}
         <a href="{{ url_for('.edit_user', service_id=service_id, user_id=item.id)}}">Change</a>
       {% endcall %}
diff --git a/tests/app/main/views/test_accept_invite.py b/tests/app/main/views/test_accept_invite.py
index 8c52400c4..54b527d93 100644
--- a/tests/app/main/views/test_accept_invite.py
+++ b/tests/app/main/views/test_accept_invite.py
@@ -1,15 +1,20 @@
 from flask import url_for
 
+from app.notify_client.models import InvitedUser
+from notifications_python_client.errors import HTTPError
+
+import pytest
+
 
 def test_existing_user_accept_invite_calls_api_and_redirects_to_dashboard(app_,
                                                                           service_one,
+                                                                          api_user_active,
                                                                           sample_invite,
                                                                           mock_accept_invite,
                                                                           mock_get_user_by_email,
                                                                           mock_add_user_to_service):
 
     expected_service = service_one['id']
-    expected_from_user = service_one['users'][0]
     expected_redirect_location = 'http://localhost/services/{}/dashboard'.format(expected_service)
 
     with app_.test_request_context():
@@ -19,7 +24,7 @@ def test_existing_user_accept_invite_calls_api_and_redirects_to_dashboard(app_,
 
             mock_accept_invite.assert_called_with('thisisnotarealtoken')
             mock_get_user_by_email.assert_called_with('invited_user@test.gov.uk')
-            mock_add_user_to_service.assert_called_with(expected_service,  expected_from_user, sample_invite)
+            mock_add_user_to_service.assert_called_with(expected_service, api_user_active.id)
 
             assert response.status_code == 302
             assert response.location == expected_redirect_location
diff --git a/tests/conftest.py b/tests/conftest.py
index b04b81e14..acd163be9 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -595,12 +595,12 @@ def mock_get_invites_for_service(mocker, service_one, sample_invite):
 @pytest.fixture(scope='function')
 def mock_accept_invite(mocker, sample_invite):
     def _accept_token(token):
-        return sample_invite
+        return InvitedUser(**sample_invite)
     return mocker.patch('app.invite_api_client.accept_invite', side_effect=_accept_token)
 
 
 @pytest.fixture(scope='function')
-def mock_add_user_to_service(mocker, service_one):
-    def _add_user(service_id, user_id, invitation):
+def mock_add_user_to_service(mocker, service_one, api_user_active):
+    def _add_user(service_id, user_id):
         return api_user_active
     return mocker.patch('app.user_api_client.add_user_to_service', side_effect=_add_user)