diff --git a/openedx/core/djangoapps/course_groups/tests/test_partition_scheme.py b/openedx/core/djangoapps/course_groups/tests/test_partition_scheme.py
index 35d66bb1d9..afda090ea5 100644
--- a/openedx/core/djangoapps/course_groups/tests/test_partition_scheme.py
+++ b/openedx/core/djangoapps/course_groups/tests/test_partition_scheme.py
@@ -393,7 +393,7 @@ class TestMasqueradedGroup(StaffMasqueradeTestCase):
         group.
         """
         self.course.cohort_config = {'cohorted': True}
-        modulestore().update_item(self.course, self.test_user.id)
+        modulestore().update_item(self.course, self.test_user.id) # pylint: disable=no-member
         cohort = CohortFactory.create(course_id=self.course.id, users=[self.test_user])
         CourseUserGroupPartitionGroup(
             course_user_group=cohort,