diff --git a/src/synchronizer/periodic_node_synchronizer.cc b/src/synchronizer/periodic_node_synchronizer.cc
index dda28c1ed..0d8476813 100644
--- a/src/synchronizer/periodic_node_synchronizer.cc
+++ b/src/synchronizer/periodic_node_synchronizer.cc
@@ -1,131 +1,131 @@
 /**
  * @file   periodic_node_synchronizer.cc
  *
  * @author Nicolas Richart
  *
  * @date creation  Tue May 29 2018
  *
  * @brief Implementation of the periodic node synchronizer
  *
  * @section LICENSE
  *
  * Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
  * Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
  *
  * Akantu is free  software: you can redistribute it and/or  modify it under the
  * terms  of the  GNU Lesser  General Public  License as  published by  the Free
  * Software Foundation, either version 3 of the License, or (at your option) any
  * later version.
  *
  * Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  * A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
  * details.
  *
  * You should  have received  a copy  of the GNU  Lesser General  Public License
  * along with Akantu. If not, see <http://www.gnu.org/licenses/>.
  *
  */
 /* -------------------------------------------------------------------------- */
 #include "periodic_node_synchronizer.hh"
 #include "mesh.hh"
 /* -------------------------------------------------------------------------- */
 
 namespace akantu {
 
 /* -------------------------------------------------------------------------- */
 PeriodicNodeSynchronizer::PeriodicNodeSynchronizer(
     Mesh & mesh, const ID & id, MemoryID memory_id,
     const bool register_to_event_manager, EventHandlerPriority event_priority)
     : NodeSynchronizer(mesh, id + ":masters", memory_id,
                        register_to_event_manager, event_priority) {}
 
 /* -------------------------------------------------------------------------- */
 void PeriodicNodeSynchronizer::update() {
   static int count = 0;
   const auto & masters_to_slaves = this->mesh.getPeriodicMasterSlaves();
   masters_list.resize(0);
   masters_list.reserve(masters_to_slaves.size());
 
   slaves_list.resize(0);
   slaves_list.reserve(masters_to_slaves.size());
 
   reset();
 
   std::set<UInt> masters_to_receive;
   for (auto && data : masters_to_slaves) {
     auto master = std::get<0>(data);
     auto slave = std::get<1>(data);
 
     masters_list.push_back(master);
     slaves_list.push_back(slave);
 
     if (not(mesh.isMasterNode(master) or mesh.isLocalNode(master))) {
       masters_to_receive.insert(master);
     }
   }
 
-  if (not mesh.isDistributed())
+  if (not mesh.isDistributed() or nb_proc == 1)
     return;
 
   std::map<Int, Array<UInt>> buffers;
   for (auto node : masters_to_receive) {
     auto && proc = mesh.getNodePrank(node);
     auto && scheme = this->communications.createRecvScheme(proc);
     scheme.push_back(node);
 
     buffers[proc].push_back(mesh.getNodeGlobalId(node));
   }
 
   auto tag = Tag::genTag(0, count, Tag::_MODIFY_SCHEME);
   std::vector<CommunicationRequest> requests;
   for (auto && data : buffers) {
     auto proc = std::get<0>(data);
     auto & buffer = std::get<1>(data);
 
     requests.push_back(communicator.asyncSend(buffer, proc, tag,
                                               CommunicationMode::_synchronous));
     std::cout << "Recv from proc : " << proc << " -> "
               << this->communications.getScheme(proc, _recv).size()
               << std::endl;
   }
 
   communicator.receiveAnyNumber<UInt>(
       requests,
       [&](auto && proc, auto && msg) {
         auto && scheme = this->communications.createSendScheme(proc);
         for (auto node : msg) {
           scheme.push_back(mesh.getNodeLocalId(node));
         }
         std::cout << "Send to proc : " << proc << " -> " << scheme.size()
                   << " [" << tag << "]" << std::endl;
       },
       tag);
   ++count;
 }
 
 /* -------------------------------------------------------------------------- */
 void PeriodicNodeSynchronizer::synchronizeOnceImpl(
     DataAccessor<UInt> & data_accessor, const SynchronizationTag & tag) const {
   NodeSynchronizer::synchronizeOnceImpl(data_accessor, tag);
 
   auto size = data_accessor.getNbData(masters_list, tag);
   CommunicationBuffer buffer(size);
 
   data_accessor.packData(buffer, masters_list, tag);
   data_accessor.unpackData(buffer, slaves_list, tag);
 }
 
 /* -------------------------------------------------------------------------- */
 void PeriodicNodeSynchronizer::waitEndSynchronizeImpl(
     DataAccessor<UInt> & data_accessor, const SynchronizationTag & tag) {
   NodeSynchronizer::waitEndSynchronizeImpl(data_accessor, tag);
 
   auto size = data_accessor.getNbData(masters_list, tag);
   CommunicationBuffer buffer(size);
 
   data_accessor.packData(buffer, masters_list, tag);
   data_accessor.unpackData(buffer, slaves_list, tag);
 }
 
 } // namespace akantu