diff --git a/docs/source/pythonapi/index.rst b/docs/source/pythonapi/index.rst
index 8abb52528..87d0d2a24 100644
--- a/docs/source/pythonapi/index.rst
+++ b/docs/source/pythonapi/index.rst
@@ -36,9 +36,7 @@ or class.
 .. tip:: Users are strongly encouraged to use the Python API to generate input
          files and analyze results.
 
--------
-Modules
--------
+.. rubric:: Modules
 
 .. toctree::
    :maxdepth: 1