diff --git a/helper/ndn-stack-helper.hpp b/helper/ndn-stack-helper.hpp
index 155c22d..bad1234 100644
--- a/helper/ndn-stack-helper.hpp
+++ b/helper/ndn-stack-helper.hpp
@@ -22,6 +22,8 @@
 #ifndef NDN_STACK_HELPER_H
 #define NDN_STACK_HELPER_H
 
+#include "ns3/ndnSIM/model/ndn-common.hpp"
+
 #include "ns3/packet.h"
 #include "ns3/ptr.h"
 #include "ns3/object-factory.h"