diff --git a/src/aodv/test/bug-772.cc b/src/aodv/test/bug-772.cc
index 4e5dde8ca..43f04302a 100644
--- a/src/aodv/test/bug-772.cc
+++ b/src/aodv/test/bug-772.cc
@@ -134,9 +134,7 @@ Bug772ChainTest::CreateDevices ()
   // 3. Setup UDP source and sink
   uint16_t port = 9; // Discard port (RFC 863)
   OnOffHelper onoff (m_proto, Address (InetSocketAddress (interfaces.GetAddress (m_size-1), port)));
-  onoff.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1.0]"));
-  onoff.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0.0]"));
-  onoff.SetAttribute ("DataRate", DataRateValue (DataRate (64000)));
+  onoff.SetConstantRate (DataRate (64000));
   onoff.SetAttribute ("PacketSize", UintegerValue (1200));
   ApplicationContainer app = onoff.Install (m_nodes->Get (0));
   app.Start (Seconds (1.0));