diff --git a/utils/tracers/ndn-l3-rate-tracer.hpp b/utils/tracers/ndn-l3-rate-tracer.hpp
index 8e5b1d5..1a6a401 100644
--- a/utils/tracers/ndn-l3-rate-tracer.hpp
+++ b/utils/tracers/ndn-l3-rate-tracer.hpp
@@ -21,7 +21,7 @@
 #ifndef CCNX_RATE_L3_TRACER_H
 #define CCNX_RATE_L3_TRACER_H
 
-#include "ndn-l3-tracer.h"
+#include "ndn-l3-tracer.hpp"
 
 #include "ns3/nstime.h"
 #include "ns3/event-id.h"