diff --git a/src/mpi/examples/simple-hybrid.cc b/src/mpi/examples/simple-hybrid.cc
index 653f9161a..7add67352 100644
--- a/src/mpi/examples/simple-hybrid.cc
+++ b/src/mpi/examples/simple-hybrid.cc
@@ -1,4 +1,3 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -64,7 +63,7 @@
 
 using namespace ns3;
 
-NS_LOG_COMPONENT_DEFINE("SimpleDistributed");
+NS_LOG_COMPONENT_DEFINE("SimpleHybrid");
 
 int
 main(int argc, char* argv[])
@@ -72,7 +71,6 @@ main(int argc, char* argv[])
     LogComponentEnable("LogicalProcess", LOG_LEVEL_INFO);
 
     bool nix = true;
-    bool nullmsg = false;
     bool tracing = false;
     bool testing = false;
     bool verbose = false;
@@ -80,24 +78,11 @@ main(int argc, char* argv[])
     // Parse command line
     CommandLine cmd(__FILE__);
     cmd.AddValue("nix", "Enable the use of nix-vector or global routing", nix);
-    cmd.AddValue("nullmsg", "Enable the use of null-message synchronization", nullmsg);
     cmd.AddValue("tracing", "Enable pcap tracing", tracing);
     cmd.AddValue("verbose", "verbose output", verbose);
     cmd.AddValue("test", "Enable regression test output", testing);
     cmd.Parse(argc, argv);
 
-    // Distributed simulation setup; by default use granted time window algorithm.
-    if (nullmsg)
-    {
-        GlobalValue::Bind("SimulatorImplementationType",
-                          StringValue("ns3::NullMessageSimulatorImpl"));
-    }
-    else
-    {
-        GlobalValue::Bind("SimulatorImplementationType",
-                          StringValue("ns3::DistributedSimulatorImpl"));
-    }
-
     // Enable parallel simulator with the command line arguments
     MtpInterface::Enable();
     MpiInterface::Enable(&argc, &argv);
diff --git a/src/mtp/examples/simple-mtp.cc b/src/mtp/examples/simple-mtp.cc
index 73a5aff5d..48ff09594 100644
--- a/src/mtp/examples/simple-mtp.cc
+++ b/src/mtp/examples/simple-mtp.cc
@@ -196,7 +196,7 @@ main(int argc, char* argv[])
         Ipv4GlobalRoutingHelper::PopulateRoutingTables();
     }
 
-    if (tracing == true)
+    if (tracing)
     {
         routerLink.EnablePcap("router-left", routerDevices, true);
         leafLink.EnablePcap("leaf-left", leftLeafDevices, true);
@@ -207,7 +207,6 @@ main(int argc, char* argv[])
     // Create a packet sink on the right leafs to receive packets from left leafs
 
     uint16_t port = 50000;
-
     Address sinkLocalAddress(InetSocketAddress(Ipv4Address::GetAny(), port));
     PacketSinkHelper sinkHelper("ns3::UdpSocketFactory", sinkLocalAddress);
     ApplicationContainer sinkApp;
@@ -219,7 +218,6 @@ main(int argc, char* argv[])
     sinkApp.Stop(Seconds(5));
 
     // Create the OnOff applications to send
-
     OnOffHelper clientHelper("ns3::UdpSocketFactory", Address());
     clientHelper.SetAttribute("OnTime", StringValue("ns3::ConstantRandomVariable[Constant=1]"));
     clientHelper.SetAttribute("OffTime", StringValue("ns3::ConstantRandomVariable[Constant=0]"));
@@ -238,6 +236,6 @@ main(int argc, char* argv[])
     Simulator::Run();
     Simulator::Destroy();
 
-    // Exit the MPI execution environment
+    // Exit the MTP execution environment
     return 0;
 }