--- a/doc/book/en/annexes/rql/index.rst	Wed Jul 07 13:50:55 2010 +0200
+++ b/doc/book/en/annexes/rql/index.rst	Wed Jul 07 10:53:03 2010 +0200
@@ -4,8 +4,9 @@
 This chapter describes the Relation Query Language syntax and its implementation in CubicWeb.
 
 .. toctree::
-   :maxdepth: 1
+   :maxdepth: 2
 
    intro
    language
+   debugging
    implementation