diff --git a/examples/wireless/wifi-spectrum-per-example.cc b/examples/wireless/wifi-spectrum-per-example.cc
index 2b56bf5d0..60df29111 100644
--- a/examples/wireless/wifi-spectrum-per-example.cc
+++ b/examples/wireless/wifi-spectrum-per-example.cc
@@ -527,7 +527,6 @@ int main (int argc, char *argv[])
 
       Simulator::Stop (Seconds (simulationTime + 1));
       Simulator::Run ();
-      Simulator::Destroy ();
 
       double throughput = 0;
       uint32_t totalPacketsThrough = 0;
@@ -563,6 +562,7 @@ int main (int argc, char *argv[])
             std::setw (12) << "N/A" <<
             std::endl;
         }
+      Simulator::Destroy ();
     }
   return 0;
 }
diff --git a/examples/wireless/wifi-spectrum-per-interference.cc b/examples/wireless/wifi-spectrum-per-interference.cc
index f63163092..a0c0ab4e0 100644
--- a/examples/wireless/wifi-spectrum-per-interference.cc
+++ b/examples/wireless/wifi-spectrum-per-interference.cc
@@ -589,7 +589,6 @@ int main (int argc, char *argv[])
 
       Simulator::Stop (Seconds (simulationTime + 1));
       Simulator::Run ();
-      Simulator::Destroy ();
 
       double throughput = 0;
       uint32_t totalPacketsThrough = 0;
@@ -625,6 +624,7 @@ int main (int argc, char *argv[])
             std::setw (12) << "N/A" <<
             std::endl;
         }
+      Simulator::Destroy ();
     }
   return 0;
 }
diff --git a/examples/wireless/wifi-spectrum-saturation-example.cc b/examples/wireless/wifi-spectrum-saturation-example.cc
index 6670bfe2c..e9869ae60 100644
--- a/examples/wireless/wifi-spectrum-saturation-example.cc
+++ b/examples/wireless/wifi-spectrum-saturation-example.cc
@@ -686,7 +686,6 @@ int main (int argc, char *argv[])
 
       Simulator::Stop (Seconds (simulationTime + 1));
       Simulator::Run ();
-      Simulator::Destroy ();
 
       double throughput;
       uint32_t totalPacketsThrough;
@@ -699,6 +698,7 @@ int main (int argc, char *argv[])
         std::setw (12) << throughput <<
         std::setw (8) << totalPacketsThrough <<
         std::endl;
+      Simulator::Destroy ();
     }
   return 0;
 }