diff --git a/Doc/library/operator.rst b/Doc/library/operator.rst
index 9ba7f41104e..3860880bf0e 100644
--- a/Doc/library/operator.rst
+++ b/Doc/library/operator.rst
@@ -404,7 +404,7 @@ Python syntax and the functions in the :mod:`operator` module.
 +-----------------------+-------------------------+---------------------------------------+
 
 Inplace Operators
-=================
+-----------------
 
 Many operations have an "in-place" version.  Listed below are functions
 providing a more primitive access to in-place operators than the usual syntax