--- a/tutorial/tutorial-csma-echo-pcap-trace.cc	Mon Mar 31 15:00:39 2008 -0700
+++ b/tutorial/tutorial-csma-echo-pcap-trace.cc	Mon Mar 31 15:19:08 2008 -0700
@@ -61,7 +61,7 @@
   apps.Start (Seconds (1.0));
   apps.Stop (Seconds (10.0));
 
-  CsmaHelper::EnablePcap ("tutorial.pcap");
+  CsmaHelper::EnablePcap ("tutorial");
   
   Simulator::Run ();
   Simulator::Destroy ();