-SALOME_NamingService* SMESH_Gen_i::myNS = NULL;
-SALOME_LifeCycleCORBA* SMESH_Gen_i::myLCC = NULL;
-SMESH_Gen_i* SMESH_Gen_i::mySMESHGen = NULL;
+SALOME_NamingService_Abstract* SMESH_Gen_i::myNS = nullptr;
+SALOME_LifeCycleCORBA* SMESH_Gen_i::myLCC = nullptr;
+SMESH_Gen_i* SMESH_Gen_i::mySMESHGen = nullptr;