diff --git a/examples/tcp/tcp-nsc-comparison.cc b/examples/tcp/tcp-nsc-comparison.cc
index ee32b5eb2..17ec9d8c7 100644
--- a/examples/tcp/tcp-nsc-comparison.cc
+++ b/examples/tcp/tcp-nsc-comparison.cc
@@ -188,7 +188,10 @@ main (int argc, char *argv[])
   apps = sink.Install (rights);
   apps.Start (Seconds (3.9999));
 
-  pointToPoint.EnablePcapAll ("nsc.pcap");
+  if (enablePcap)
+    {
+      pointToPoint.EnablePcapAll ("nsc.pcap");
+    }
 
   Simulator::Stop (Seconds (stopTime));
   Simulator::Run ();