--- a/src/wifi/helper/yans-wifi-helper.cc	Tue Aug 14 13:12:00 2012 -0700
+++ b/src/wifi/helper/yans-wifi-helper.cc	Tue Aug 14 13:52:17 2012 -0700
@@ -536,4 +536,11 @@
   Config::Connect (oss.str (), MakeBoundCallback (&AsciiPhyTransmitSinkWithContext, stream));
 }
 
+int64_t
+YansWifiPhyHelper::AssignStreams (int64_t stream)
+{
+  NS_LOG_FUNCTION (this << stream);
+  return m_channel->AssignStreams (stream);
+}
+
 } // namespace ns3