diff --git a/Doc/howto/enum.rst b/Doc/howto/enum.rst
index 748ec5b2436..18e13fcf9f5 100644
--- a/Doc/howto/enum.rst
+++ b/Doc/howto/enum.rst
@@ -1152,6 +1152,14 @@ the following are true:
     >>> (Color.RED | Color.GREEN).name
     'RED|GREEN'
 
+    >>> class Perm(IntFlag):
+    ...     R = 4
+    ...     W = 2
+    ...     X = 1
+    ...
+    >>> (Perm.R & Perm.W).name is None  # effectively Perm(0)
+    True
+
 - multi-bit flags, aka aliases, can be returned from operations::
 
     >>> Color.RED | Color.BLUE