diff --git a/examples/consumer-with-timer.cpp b/examples/consumer-with-timer.cpp
index 6c7ef8c..83bb858 100644
--- a/examples/consumer-with-timer.cpp
+++ b/examples/consumer-with-timer.cpp
@@ -32,7 +32,7 @@
   
   ndn::Interest i(ndn::Name("/localhost/testApp/randomData"));
   i.setScope(1);
-  i.setInterestLifetime(1000);
+  i.setInterestLifetime(ndn::time::milliseconds(1000));
   i.setMustBeFresh(true);
 
   face.expressInterest(i,
@@ -50,7 +50,7 @@
     
     ndn::Interest i(ndn::Name("/localhost/testApp/randomData"));
     i.setScope(1);
-    i.setInterestLifetime(1000);
+    i.setInterestLifetime(ndn::time::seconds(1));
     i.setMustBeFresh(true);
 
     ndn::Face face(io);
diff --git a/examples/consumer.cpp b/examples/consumer.cpp
index 69a51e4..9ef366a 100644
--- a/examples/consumer.cpp
+++ b/examples/consumer.cpp
@@ -29,7 +29,7 @@
   try {
     ndn::Interest i(ndn::Name("/localhost/testApp/randomData"));
     i.setScope(1);
-    i.setInterestLifetime(1000);
+    i.setInterestLifetime(ndn::time::milliseconds(1000));
     i.setMustBeFresh(true);
 
     ndn::Face face;
diff --git a/examples/producer.cpp b/examples/producer.cpp
index c098739..b34bae1 100644
--- a/examples/producer.cpp
+++ b/examples/producer.cpp
@@ -26,7 +26,7 @@
     std::cout << "<< I: " << interest << std::endl;
     
     ndn::Data data(ndn::Name(interest.getName()).append("testApp").appendVersion());
-    data.setFreshnessPeriod(1000); // 10 sec
+    data.setFreshnessPeriod(time::seconds(10));
 
     data.setContent((const uint8_t*)"HELLO KITTY", sizeof("HELLO KITTY"));