diff --git a/docs/source/index.rst b/docs/source/index.rst
index 02f5900..f7464a1 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -15,5 +15,6 @@ Neuron
 Contents
 ==================
 
+* :ref:`index`
 * :ref:`index`
 * :ref:`search`