diff --git a/src/internet-apps/model/v4ping.cc b/src/internet-apps/model/v4ping.cc
index ad7530668..85b020900 100644
--- a/src/internet-apps/model/v4ping.cc
+++ b/src/internet-apps/model/v4ping.cc
@@ -163,7 +163,7 @@ V4Ping::Receive (Ptr<Socket> socket)
                           std::cout << recvSize << " bytes from " << realFrom.GetIpv4 () << ":"
                                     << " icmp_seq=" << echo.GetSequenceNumber ()
                                     << " ttl=" << (unsigned)ipv4.GetTtl ()
-                                    << " time=" << delta.GetMilliSeconds () << " ms\n";
+                                    << " time=" << delta.As (Time::MS) << "\n";
                         }
                     }
                 }
@@ -284,7 +284,7 @@ V4Ping::StopApplication (void)
       os << "--- " << m_remote << " ping statistics ---\n" 
          << m_seq << " packets transmitted, " << m_recv << " received, "
          << ((m_seq - m_recv) * 100 / m_seq) << "% packet loss, "
-         << "time " << (Simulator::Now () - m_started).GetMilliSeconds () << "ms\n";
+         << "time " << (Simulator::Now () - m_started).As (Time::MS) << "\n";
 
       if (m_avgRtt.Count () > 0)
         os << "rtt min/avg/max/mdev = " << m_avgRtt.Min () << "/" << m_avgRtt.Avg () << "/"
diff --git a/src/internet-apps/model/v4traceroute.cc b/src/internet-apps/model/v4traceroute.cc
index 888e5d047..4ffc5a21b 100644
--- a/src/internet-apps/model/v4traceroute.cc
+++ b/src/internet-apps/model/v4traceroute.cc
@@ -264,7 +264,7 @@ V4TraceRoute::Receive (Ptr<Socket> socket)
               routeIpv4.str ("");
               routeIpv4.clear ();
               routeIpv4 << realFrom.GetIpv4 ();
-              osRoute << delta.GetMilliSeconds () << " ms ";
+              osRoute << delta.As (Time::MS);
               if (m_probeCount == m_maxProbes)
                 {
                   if (m_verbose)
@@ -326,7 +326,7 @@ V4TraceRoute::Receive (Ptr<Socket> socket)
                       routeIpv4.str ("");
                       routeIpv4.clear ();
                       routeIpv4 << realFrom.GetIpv4 ();
-                      osRoute << delta.GetMilliSeconds () << " ms ";
+                      osRoute << delta.As (Time::MS);
 
                       if (m_probeCount == m_maxProbes)
                         {