diff --git a/tests/python_client/deploy/conftest.py b/tests/python_client/deploy/conftest.py
index f21dfc8504c23..3e7ac8e896d6a 100644
--- a/tests/python_client/deploy/conftest.py
+++ b/tests/python_client/deploy/conftest.py
@@ -20,7 +20,7 @@
 
 def pytest_addoption(parser):
 
-    parser.addoption('--data_size', type='int', action='store', default=3000, help="data size for deploy test")
+    parser.addoption('--data_size', type=int, action='store', default=3000, help="data size for deploy test")
 
 
 @pytest.fixture