diff --git a/tests/fw/forwarder.cpp b/tests/fw/forwarder.cpp
index 7ec90a5..c96e57a 100644
--- a/tests/fw/forwarder.cpp
+++ b/tests/fw/forwarder.cpp
@@ -24,7 +24,7 @@
   Name nameAB ("ndn:/A/B");
   Name nameABC("ndn:/A/B/C");
   shared_ptr<Interest> interestAB = makeInterest(nameAB);
-  interestAB->setInterestLifetime(4000);
+  interestAB->setInterestLifetime(time::seconds(4));
   shared_ptr<Data> dataABC = makeData(nameABC);
 
   shared_ptr<DummyFace> face1 = make_shared<DummyFace>();
@@ -317,10 +317,10 @@
   BOOST_CHECK_EQUAL(strategyQ->m_beforeSatisfyPendingInterest_count, 1);
 
   shared_ptr<Interest> interest3 = makeInterest("ndn:/A/3");
-  interest3->setInterestLifetime(30);
+  interest3->setInterestLifetime(time::milliseconds(30));
   forwarder.onInterest(*face1, *interest3);
   shared_ptr<Interest> interest4 = makeInterest("ndn:/B/4");
-  interest4->setInterestLifetime(5000);
+  interest4->setInterestLifetime(time::milliseconds(5000));
   forwarder.onInterest(*face1, *interest4);
 
   strategyP->m_beforeExpirePendingInterest_count = 0;
diff --git a/tests/fw/ncc-strategy.cpp b/tests/fw/ncc-strategy.cpp
index d980c49..044b3ec 100644
--- a/tests/fw/ncc-strategy.cpp
+++ b/tests/fw/ncc-strategy.cpp
@@ -49,7 +49,7 @@
   // first Interest: strategy knows nothing and follows routing
   shared_ptr<Interest> interest1p = makeInterest("ndn:/0Jm1ajrW/%00");
   Interest& interest1 = *interest1p;
-  interest1.setInterestLifetime(8000);
+  interest1.setInterestLifetime(time::milliseconds(8000));
   shared_ptr<pit::Entry> pitEntry1 = pit.insert(interest1).first;
 
   pitEntry1->insertOrUpdateInRecord(face3, interest1);
@@ -74,7 +74,7 @@
   // second Interest: strategy knows face2 is best
   shared_ptr<Interest> interest2p = makeInterest("ndn:/0Jm1ajrW/%00%01");
   Interest& interest2 = *interest2p;
-  interest2.setInterestLifetime(8000);
+  interest2.setInterestLifetime(time::milliseconds(8000));
   shared_ptr<pit::Entry> pitEntry2 = pit.insert(interest2).first;
 
   pitEntry2->insertOrUpdateInRecord(face3, interest2);