diff --git a/utils/trie/fifo-policy.hpp b/utils/trie/fifo-policy.hpp
index d58de22..44f335e 100644
--- a/utils/trie/fifo-policy.hpp
+++ b/utils/trie/fifo-policy.hpp
@@ -20,6 +20,8 @@
 #ifndef FIFO_POLICY_H_
 #define FIFO_POLICY_H_
 
+/// @cond include_hidden
+
 #include <boost/intrusive/options.hpp>
 #include <boost/intrusive/list.hpp>
 
@@ -125,4 +127,6 @@
 } // ndn
 } // ns3
 
+/// @endcond
+
 #endif