diff --git a/Lib/test/test_importlib/test_discover.py b/Lib/test/test_importlib/test_discover.py
index 8c5fa65a564c6d..6518160eda498e 100644
--- a/Lib/test/test_importlib/test_discover.py
+++ b/Lib/test/test_importlib/test_discover.py
@@ -11,7 +11,7 @@ def __init__(self, discover=[]):
         self._discovered_values = discover
 
     def find_spec(self, fullname, path=None, target=None):
-        raise NotImplemented
+        raise NotImplementedError()
 
     def discover(self, parent=None):
         yield from self._discovered_values