diff --git a/python/ql/src/Classes/SubclassShadowing/examples/SubclassShadowingBad.py b/python/ql/src/Classes/SubclassShadowing/examples/SubclassShadowingBad.py
index 4699b58d7e4..00a221760b4 100644
--- a/python/ql/src/Classes/SubclassShadowing/examples/SubclassShadowingBad.py
+++ b/python/ql/src/Classes/SubclassShadowing/examples/SubclassShadowingBad.py
@@ -2,7 +2,7 @@ class A:
     def __init__(self):
         self._foo = 3
 
-class B:
+class B(A):
     # BAD: _foo is shadowed by attribute A._foo
     def _foo(self):
         return 2