diff --git a/model/cs/custom-policies/freshness-policy.hpp b/model/cs/custom-policies/freshness-policy.hpp
index 999c61d..9d66c66 100644
--- a/model/cs/custom-policies/freshness-policy.hpp
+++ b/model/cs/custom-policies/freshness-policy.hpp
@@ -21,6 +21,8 @@
 #ifndef FRESHNESS_POLICY_H_
 #define FRESHNESS_POLICY_H_
 
+#include "ns3/ndnSIM/model/ndn-common.hpp"
+
 #include <boost/intrusive/options.hpp>
 #include <boost/intrusive/list.hpp>
 
diff --git a/model/cs/custom-policies/lifetime-stats-policy.hpp b/model/cs/custom-policies/lifetime-stats-policy.hpp
index 1102ef1..1abf39d 100644
--- a/model/cs/custom-policies/lifetime-stats-policy.hpp
+++ b/model/cs/custom-policies/lifetime-stats-policy.hpp
@@ -21,6 +21,8 @@
 #ifndef LIFETIME_STATS_POLICY_H_
 #define LIFETIME_STATS_POLICY_H_
 
+#include "ns3/ndnSIM/model/ndn-common.hpp"
+
 #include <boost/intrusive/options.hpp>
 #include <boost/intrusive/list.hpp>
 
diff --git a/model/cs/custom-policies/probability-policy.hpp b/model/cs/custom-policies/probability-policy.hpp
index 57d6835..8638c0a 100644
--- a/model/cs/custom-policies/probability-policy.hpp
+++ b/model/cs/custom-policies/probability-policy.hpp
@@ -21,6 +21,8 @@
 #ifndef PROBABILITY_POLICY_H_
 #define PROBABILITY_POLICY_H_
 
+#include "ns3/ndnSIM/model/ndn-common.hpp"
+
 #include <boost/intrusive/options.hpp>
 #include <boost/intrusive/list.hpp>