diff --git a/tempest/api/volume/admin/test_group_snapshots.py b/tempest/api/volume/admin/test_group_snapshots.py
index ddfc78a..73903cf 100644
--- a/tempest/api/volume/admin/test_group_snapshots.py
+++ b/tempest/api/volume/admin/test_group_snapshots.py
@@ -256,7 +256,6 @@
     volume_max_microversion = 'latest'
 
     @decorators.idempotent_id('3b42c9b9-c984-4444-816e-ca2e1ed30b40')
-    @decorators.skip_because(bug='1770179')
     def test_reset_group_snapshot_status(self):
         """Test resetting group snapshot status to creating/available/error"""
         # Create volume type
diff --git a/tempest/lib/api_schema/response/volume/volumes.py b/tempest/lib/api_schema/response/volume/volumes.py
index ffcf488..4f44526 100644
--- a/tempest/lib/api_schema/response/volume/volumes.py
+++ b/tempest/lib/api_schema/response/volume/volumes.py
@@ -21,7 +21,7 @@
     'items': {
         'type': 'object',
         'properties': {
-            'server_id': {'type': 'string', 'format': 'uuid'},
+            'server_id': {'type': ['string', 'null'], 'format': 'uuid'},
             'attachment_id': {'type': 'string', 'format': 'uuid'},
             'attached_at': parameter_types.date_time_or_null,
             'host_name': {'type': ['string', 'null']},
diff --git a/tempest/lib/cmd/check_uuid.py b/tempest/lib/cmd/check_uuid.py
index 0ae11ca..466222d 100755
--- a/tempest/lib/cmd/check_uuid.py
+++ b/tempest/lib/cmd/check_uuid.py
@@ -38,7 +38,7 @@
 
 class SourcePatcher(object):
 
-    """"Lazy patcher for python source files"""
+    """Lazy patcher for python source files"""
 
     def __init__(self):
         self.source_files = None
@@ -431,14 +431,21 @@
                         help='Package with tests')
     parser.add_argument('--fix', action='store_true', dest='fix_tests',
                         help='Attempt to fix tests without UUIDs')
+    parser.add_argument('--libpath', action='store', dest='libpath',
+                        default=".", type=str,
+                        help='Path to package')
+
     args = parser.parse_args()
-    sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
+    sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
+    sys.path.insert(0, args.libpath)
     pkg = importlib.import_module(args.package)
+
     checker = TestChecker(pkg)
     errors = False
     tests = checker.get_tests()
     untagged = checker.find_untagged(tests)
     errors = checker.report_collisions(tests) or errors
+
     if args.fix_tests and untagged:
         checker.fix_tests(untagged)
     else: