diff --git a/src/internet/model/global-route-manager-impl.cc b/src/internet/model/global-route-manager-impl.cc
index 6cf131cf3..8435125f0 100644
--- a/src/internet/model/global-route-manager-impl.cc
+++ b/src/internet/model/global-route-manager-impl.cc
@@ -710,12 +710,14 @@ GlobalRouteManagerImpl::InitializeRoutes ()
       Ptr<GlobalRouter> rtr = 
         node->GetObject<GlobalRouter> ();
 
+#ifdef NS3_MPI
       uint32_t systemId = Simulator::GetSystemId ();
       // Ignore nodes that are not assigned to our systemId (distributed sim)
       if (node->GetSystemId () != systemId) 
         {
           continue;
         }
+#endif
 
 //
 // if the node has a global router interface, then run the global routing