diff --git a/utils/trie/payload-with-policy.hpp b/utils/trie/payload-with-policy.hpp
index e682fea..c4c904e 100644
--- a/utils/trie/payload-with-policy.hpp
+++ b/utils/trie/payload-with-policy.hpp
@@ -20,6 +20,8 @@
 #ifndef PAYLOAD_WITH_INDEX_H_
 #define PAYLOAD_WITH_INDEX_H_
 
+/// @cond include_hidden
+
 namespace ns3 {
 namespace ndn {
 namespace ndnSIM {
@@ -100,4 +102,6 @@
 } // ndn
 } // ns3
 
+/// @endcond
+
 #endif // PAYLOAD_WITH_POLICY_H_