diff --git a/utils/tracers/ndn-l3-rate-tracer.cpp b/utils/tracers/ndn-l3-rate-tracer.cpp
index 8d27225..efb09b1 100644
--- a/utils/tracers/ndn-l3-rate-tracer.cpp
+++ b/utils/tracers/ndn-l3-rate-tracer.cpp
@@ -334,11 +334,11 @@
   // no "size" stats
 
   for (const auto& in : entry.getInRecords()) {
-    std::get<0>(m_stats[in.getFace()]).m_satisfiedInterests ++;
+    std::get<0>(m_stats[(in.getFace()).shared_from_this()]).m_satisfiedInterests ++;
   }
 
   for (const auto& out : entry.getOutRecords()) {
-    std::get<0>(m_stats[out.getFace()]).m_outSatisfiedInterests ++;
+    std::get<0>(m_stats[(out.getFace()).shared_from_this()]).m_outSatisfiedInterests ++;
   }
 }
 
@@ -349,11 +349,11 @@
   // no "size" stats
 
   for (const auto& in : entry.getInRecords()) {
-    std::get<0>(m_stats[in.getFace()]).m_timedOutInterests++;
+    std::get<0>(m_stats[(in.getFace()).shared_from_this()]).m_timedOutInterests++;
   }
 
   for (const auto& out : entry.getOutRecords()) {
-    std::get<0>(m_stats[out.getFace()]).m_outTimedOutInterests++;
+    std::get<0>(m_stats[(out.getFace()).shared_from_this()]).m_outTimedOutInterests++;
   }
 }