diff --git a/doc/source/index.rst b/doc/source/index.rst
index ec31348c..8e423890 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -18,5 +18,4 @@ extensions.
 .. rubric:: Indices and tables
 
 * :ref:`genindex`
-* :ref:`modindex`
 * :ref:`search`