diff --git a/Lib/exceptions.py b/Lib/exceptions.py
index af752d915e4..56eed92d804 100644
--- a/Lib/exceptions.py
+++ b/Lib/exceptions.py
@@ -42,6 +42,7 @@ Exception(*)
       +-- NameError
       |    |
       |    +-- UnboundLocalError(*)
+      |
       +-- AttributeError
       +-- SyntaxError
       +-- TypeError