diff --git a/wrap/io_trimesh/export_obj.h b/wrap/io_trimesh/export_obj.h
index effb733f..98fc3053 100644
--- a/wrap/io_trimesh/export_obj.h
+++ b/wrap/io_trimesh/export_obj.h
@@ -205,7 +205,7 @@ public:
     {
       if((mask & Mask::IOM_FACECOLOR) || (mask & Mask::IOM_WEDGTEXCOORD) || (mask & Mask::IOM_VERTTEXCOORD))
       {
-        int index = Materials<SaveMeshType>::CreateNewMaterial(m,materialVec,material_num,fi);
+        int index = (*fi).mInd;
 
         if(index == (int)materialVec.size())//inserts a new element material
         {
diff --git a/wrap/io_trimesh/import_obj.h b/wrap/io_trimesh/import_obj.h
index 84c06cba..9debd142 100644
--- a/wrap/io_trimesh/import_obj.h
+++ b/wrap/io_trimesh/import_obj.h
@@ -51,6 +51,8 @@ namespace vcg {
             template <class OpenMeshType>
             class ImporterOBJ
             {
+            private:
+                std::vector<Material> materials;
             public:
                 static int &MRGBLineCount(){static int _MRGBLineCount=0; return _MRGBLineCount;}
 
@@ -113,6 +115,7 @@ namespace vcg {
                     int tInd;
                     bool  edge[3];// useless if the face is a polygon, no need to have variable length array
                     Color4b c;
+                    int mInd;
                 };
 
                 struct ObjEdge
@@ -254,7 +257,9 @@ namespace vcg {
                         stream.close();
                         return E_CANTOPEN;
                     }
-                    std::vector<Material>	materials;  // materials vector
+                    typename OpenMeshType::template PerMeshAttributeHandle<std::vector<Material>> hMaterial =
+                            vcg::tri::Allocator<OpenMeshType>:: template GetPerMeshAttribute<std::vector<Material>>(m, std::string("materials"));
+                    std::vector<Material>	materials = hMaterial();  // materials vector
                     std::vector<ObjTexCoord>	texCoords;  // texture coordinates
                     std::vector<CoordType>  normals;		// vertex normals
                     std::vector<ObjIndexedFace> indexedFaces;
@@ -585,6 +590,8 @@ namespace vcg {
                                         // assigning face color
                                         if( oi.mask & vcg::tri::io::Mask::IOM_FACECOLOR) ff.c = currentColor;
 
+                                        ff.mInd = currentMaterialIdx;
+
                                         ++numTriangles;
                                         indexedFaces.push_back(ff);
                                     }