diff --git a/examples/tutorial/third.cc b/examples/tutorial/third.cc
old mode 100755
new mode 100644
index e6360c4ae..abb2bd376
--- a/examples/tutorial/third.cc
+++ b/examples/tutorial/third.cc
@@ -25,6 +25,10 @@
 
 // Default Network Topology
 //
+// Number of wifi or csma nodes can be increased up to 250
+//                          |
+//                 Rank 0   |   Rank 1
+// -------------------------|----------------------------
 //   Wifi 10.1.3.0
 //                 AP
 //  *    *    *    *
@@ -175,13 +179,9 @@ main (int argc, char *argv[])
 
   if (tracing == true)
     {
-      pointToPoint.EnablePcapAll ("third-distributed-wifi");
-      phy.EnablePcap ("third-distributed-wifi", apDevices.Get (0));
-      csma.EnablePcap ("third-distributed-wifi", csmaDevices.Get (0), true);
-          
-      pointToPoint.EnablePcapAll ("third-distributed-csma");
-      phy.EnablePcap ("third-distributed-csma", apDevices.Get (0));
-      csma.EnablePcap ("third-distributed-csma", csmaDevices.Get (0), true);
+      pointToPoint.EnablePcapAll ("third");
+      phy.EnablePcap ("third", apDevices.Get (0));
+      csma.EnablePcap ("third", csmaDevices.Get (0), true);
     }
 
   Simulator::Run ();
diff --git a/src/mpi/examples/third-distributed.cc b/src/mpi/examples/third-distributed.cc
old mode 100755
new mode 100644
index 40624f9b0..17950b4fb
--- a/src/mpi/examples/third-distributed.cc
+++ b/src/mpi/examples/third-distributed.cc
@@ -26,6 +26,7 @@
 #include "ns3/mpi-module.h"
 
 // Default Network Topology
+//
 // (same as third.cc from tutorial)
 // Distributed simulation, split along the p2p link
 // Number of wifi or csma nodes can be increased up to 250