diff --git a/tempest_lib/services/identity/v3/token_client.py b/tempest_lib/services/identity/v3/token_client.py
index c030bba..868b4f7 100644
--- a/tempest_lib/services/identity/v3/token_client.py
+++ b/tempest_lib/services/identity/v3/token_client.py
@@ -105,10 +105,10 @@ class V3TokenClient(rest_client.RestClient):
             elif project_name:
                 _project['name'] = project_name
 
-                if project_domain_id is not None:
-                    _project['domain'] = {'id': project_domain_id}
-                elif project_domain_name is not None:
-                    _project['domain'] = {'name': project_domain_name}
+            if project_domain_id is not None:
+                _project['domain'] = {'id': project_domain_id}
+            elif project_domain_name is not None:
+                _project['domain'] = {'name': project_domain_name}
 
             creds['auth']['scope'] = dict(project=_project)
         elif domain_id:
diff --git a/tempest_lib/tests/services/identity/v3/test_token_client.py b/tempest_lib/tests/services/identity/v3/test_token_client.py
index 44cc8e2..b3a8b28 100644
--- a/tempest_lib/tests/services/identity/v3/test_token_client.py
+++ b/tempest_lib/tests/services/identity/v3/test_token_client.py
@@ -57,6 +57,44 @@ class TestTokenClientV2(base.TestCase):
         post_mock.mock.assert_called_once_with('fake_url/auth/tokens',
                                                body=req_dict)
 
+    def test_auth_with_project_id_and_domain_id(self):
+        token_client_v3 = token_client.V3TokenClient('fake_url')
+        post_mock = self.useFixture(mockpatch.PatchObject(
+            token_client_v3, 'post', return_value=self.fake_201_http.request(
+                'fake_url', body={'access': {'token': 'fake_token'}})))
+        resp = token_client_v3.auth(
+            username='fake_user', password='fake_pass',
+            project_id='fcac2a055a294e4c82d0a9c21c620eb4',
+            user_domain_id='14f4a9a99973404d8c20ba1d2af163ff',
+            project_domain_id='291f63ae9ac54ee292ca09e5f72d9676')
+        self.assertIsInstance(resp, rest_client.ResponseBody)
+        req_dict = json.dumps({
+            'auth': {
+                'identity': {
+                    'methods': ['password'],
+                    'password': {
+                        'user': {
+                            'name': 'fake_user',
+                            'password': 'fake_pass',
+                            'domain': {
+                                'id': '14f4a9a99973404d8c20ba1d2af163ff'
+                            }
+                        }
+                    }
+                },
+                'scope': {
+                    'project': {
+                        'id': 'fcac2a055a294e4c82d0a9c21c620eb4',
+                        'domain': {
+                            'id': '291f63ae9ac54ee292ca09e5f72d9676'
+                        }
+                    }
+                }
+            }
+        }, sort_keys=True)
+        post_mock.mock.assert_called_once_with('fake_url/auth/tokens',
+                                               body=req_dict)
+
     def test_auth_with_tenant(self):
         token_client_v2 = token_client.V3TokenClient('fake_url')
         post_mock = self.useFixture(mockpatch.PatchObject(