diff --git a/tests/functional/b/bad_dunder_name.py b/tests/functional/b/bad_dunder_name.py
index 3d6095564d9..398c59f6c13 100644
--- a/tests/functional/b/bad_dunder_name.py
+++ b/tests/functional/b/bad_dunder_name.py
@@ -12,6 +12,11 @@ def __hello__(self):  # [bad-dunder-name]
     def hello(self):
         print("hello")
 
+   def _protected_method(self):
+        print("Protected")
+
+   def __private_method(self):
+        print("Private")
     def __init__(self):
         pass