diff --git a/examples/new_material/local_material_damage.hh b/examples/new_material/local_material_damage.hh
index 2f1105b80..ca6410f5b 100644
--- a/examples/new_material/local_material_damage.hh
+++ b/examples/new_material/local_material_damage.hh
@@ -1,127 +1,123 @@
 /**
  * @file   local_material_damage.hh
  *
  * @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
  * @author Marion Estelle Chambart <marion.chambart@epfl.ch>
  * @author Nicolas Richart <nicolas.richart@epfl.ch>
  *
  * @date creation: Mon Aug 10 2015
  * @date last modification: Mon Jan 18 2016
  *
  * @brief  Material isotropic elastic
  *
  * @section LICENSE
  *
  * Copyright (©) 2015 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 "aka_common.hh"
 #include "material.hh"
 /* -------------------------------------------------------------------------- */
 
 #ifndef __AKANTU_LOCAL_MATERIAL_DAMAGE_HH__
 #define __AKANTU_LOCAL_MATERIAL_DAMAGE_HH__
 
-__BEGIN_AKANTU__
-
 class LocalMaterialDamage : public Material {
   /* ------------------------------------------------------------------------ */
   /* Constructors/Destructors                                                 */
   /* ------------------------------------------------------------------------ */
 public:
   LocalMaterialDamage(SolidMechanicsModel & model, const ID & id = "");
 
   virtual ~LocalMaterialDamage(){};
 
   /* ------------------------------------------------------------------------ */
   /* Methods                                                                  */
   /* ------------------------------------------------------------------------ */
 public:
   void initMaterial();
 
   /// constitutive law for all element of a type
   void computeStress(ElementType el_type, GhostType ghost_type = _not_ghost);
 
   /// constitutive law for a given quadrature point
   inline void computeStressOnQuad(Matrix<Real> & grad_u, Matrix<Real> & sigma,
                                   Real & damage);
 
   /// compute tangent stiffness
   virtual void computeTangentStiffness(__attribute__((unused))
                                        const ElementType & el_type,
                                        __attribute__((unused))
                                        Array<Real> & tangent_matrix,
                                        __attribute__((unused))
                                        GhostType ghost_type = _not_ghost){};
 
   /// compute the potential energy for all elements
   void computePotentialEnergy(ElementType el_type,
                               GhostType ghost_type = _not_ghost);
 
   /// compute the potential energy for on element
   inline void computePotentialEnergyOnQuad(Matrix<Real> & grad_u,
                                            Matrix<Real> & sigma, Real & epot);
 
   /* ------------------------------------------------------------------------ */
   /* Accessors                                                                */
   /* ------------------------------------------------------------------------ */
 public:
   /// compute the celerity of the fastest wave in the material
   inline Real getCelerity(const Element & element) const;
 
   /* ------------------------------------------------------------------------ */
   /* Class Members                                                            */
   /* ------------------------------------------------------------------------ */
 
   AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Damage, damage, Real);
 
 private:
   /// the young modulus
   Real E;
 
   /// Poisson coefficient
   Real nu;
 
   /// First Lamé coefficient
   Real lambda;
 
   /// Second Lamé coefficient (shear modulus)
   Real mu;
 
   /// resistance to damage
   Real Yd;
 
   /// damage threshold
   Real Sd;
 
   /// Bulk modulus
   Real kpa;
 
   /// damage internal variable
   InternalField<Real> damage;
 };
 
 /* -------------------------------------------------------------------------- */
 /* inline functions                                                           */
 /* -------------------------------------------------------------------------- */
 #include "local_material_damage_inline_impl.hh"
 
-__END_AKANTU__
-
 #endif /* __AKANTU_LOCAL_MATERIAL_DAMAGE_HH__ */