diff --git a/doc/index.rst b/doc/index.rst
index 6bc69d14bca6d3dc061625a7539a23ff886b6aa2..609e77a334d6ba43fcae9da0e77d7be414bfa938 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -26,7 +26,7 @@ The CAISAR Platform
 This work has been partly supported by the `Confiance.ai`_ program.
 
 .. toctree::
-   :maxdepth: 3
+   :maxdepth: 2
    :numbered:
 
    foreword