diff --git a/apps/backend/tests/subscription/test_performance.py b/apps/backend/tests/subscription/test_performance.py
index 67ffbc442a..e17ee8ebc6 100644
--- a/apps/backend/tests/subscription/test_performance.py
+++ b/apps/backend/tests/subscription/test_performance.py
@@ -215,7 +215,7 @@ class TestPerformance(TestCase):
 
     @classmethod
     def mock_get_instance_by_scope(cls, instance_num):
-        def get_instances_by_scope(scope, *args, **kwargs):
+        def get_instances_by_scope(scope, data_backend, *args, **kwargs):
             if scope["nodes"]:
                 mocked_instances = {}
                 for i in range(instance_num):
diff --git a/apps/node_man/tests/test_handlers/test_policy.py b/apps/node_man/tests/test_handlers/test_policy.py
index 3b4cc443c1..67be9d04f3 100644
--- a/apps/node_man/tests/test_handlers/test_policy.py
+++ b/apps/node_man/tests/test_handlers/test_policy.py
@@ -35,7 +35,7 @@
 from apps.utils.unittest.testcase import CustomBaseTestCase
 
 
-def get_instances_by_scope(scope, **kwargs):
+def get_instances_by_scope(scope, data_backend, **kwargs):
     host_id = scope["nodes"][0]["bk_host_id"]
     host = Host.objects.filter(bk_host_id=host_id)
     instance_key = f"host|instance|host|{host_id}"