diff --git a/docs/source/examples.rst b/docs/source/examples.rst
index 47d4a65..98c8314 100644
--- a/docs/source/examples.rst
+++ b/docs/source/examples.rst
@@ -46,7 +46,6 @@
 
      NS_LOG=ndn.Consumer:ndn.Producer ./waf --run=ndn-simple
 
-
 .. _9-node-grid-example:
 
 9-node grid example
@@ -289,3 +288,7 @@
 
 :ref:`Custom applications`
 
+25-node tree topology with L2Tracer
+-----------------------------------
+
+:ref:`Example of packet drop tracer (L2Tracer)`