diff --git a/utils/ndn-fw-hop-count-tag.cpp b/utils/ndn-fw-hop-count-tag.cpp
index 8e4ba4c..f4d65db 100644
--- a/utils/ndn-fw-hop-count-tag.cpp
+++ b/utils/ndn-fw-hop-count-tag.cpp
@@ -18,7 +18,7 @@
  * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
  */
 
-#include "ndn-fw-hop-count-tag.h"
+#include "ndn-fw-hop-count-tag.hpp"
 
 namespace ns3 {
 namespace ndn {