diff --git a/daemon/fw/asf-probing-module.cpp b/daemon/fw/asf-probing-module.cpp
index f29d0e7..24b4577 100644
--- a/daemon/fw/asf-probing-module.cpp
+++ b/daemon/fw/asf-probing-module.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2016,  Regents of the University of California,
+/*
+ * Copyright (c) 2014-2018,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -31,7 +31,8 @@
 namespace fw {
 namespace asf {
 
-constexpr time::seconds ProbingModule::DEFAULT_PROBING_INTERVAL;
+constexpr time::milliseconds ProbingModule::DEFAULT_PROBING_INTERVAL;
+constexpr time::milliseconds ProbingModule::MIN_PROBING_INTERVAL;
 
 static_assert(ProbingModule::DEFAULT_PROBING_INTERVAL < AsfMeasurements::MEASUREMENTS_LIFETIME,
               "ProbingModule::DEFAULT_PROBING_INTERVAL must be less than AsfMeasurements::MEASUREMENTS_LIFETIME");
@@ -91,7 +92,7 @@
       continue;
     }
 
-    FaceInfo* info = m_measurements.getFaceInfo(fibEntry, interest, hopFace);
+    FaceInfo* info = m_measurements.getFaceInfo(fibEntry, interest, hopFace.getId());
 
     // If no RTT has been recorded, probe this face
     if (info == nullptr || !info->hasSrttMeasurement()) {
@@ -189,6 +190,19 @@
   return dist(getGlobalRng());
 }
 
+void
+ProbingModule::setProbingInterval(size_t probingInterval)
+{
+  if (time::milliseconds(probingInterval) >= MIN_PROBING_INTERVAL) {
+    m_probingInterval = time::milliseconds(probingInterval);
+  }
+  else {
+    BOOST_THROW_EXCEPTION(std::invalid_argument("Probing interval should be >= "
+                                                + to_string(MIN_PROBING_INTERVAL.count())
+                                                + " milliseconds"));
+  }
+}
+
 } // namespace asf
 } // namespace fw
 } // namespace nfd