diff --git a/docs/index.rst b/docs/index.rst
index 22eccfd..db68071 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -1,20 +1,22 @@
+.. _swh-model:
+
 Software Heritage - Development Documentation
 =============================================
 
 .. toctree::
    :maxdepth: 2
    :caption: Contents:
 
 
 Overview
 --------
 
 * :ref:`data-model`
 
 
 Indices and tables
 ==================
 
 * :ref:`genindex`
 * :ref:`modindex`
 * :ref:`search`