diff --git a/test/util/conf_test.py b/test/util/conf_test.py
index 8a0c79a66..c950d7f27 100644
--- a/test/util/conf_test.py
+++ b/test/util/conf_test.py
@@ -203,7 +203,7 @@ class TestClass(object):
       def __init__(self, string_default):
         self.string_default = string_default
 
-    instance = TestClass()  # pylint: disable=no-value-for-parameter
+    instance = TestClass()  # pylint: disable=no-value-for-parameter  # pytype: disable=missing-parameter
     self.assertEqual('default', instance.string_default)  # pytype: disable=attribute-error