diff --git a/BGL/include/CGAL/boost/graph/named_params_helper.h b/BGL/include/CGAL/boost/graph/named_params_helper.h
index b74fa4a8c16..2e6a53b63fd 100644
--- a/BGL/include/CGAL/boost/graph/named_params_helper.h
+++ b/BGL/include/CGAL/boost/graph/named_params_helper.h
@@ -316,7 +316,7 @@ CGAL_DEF_GET_INITIALIZED_INDEX_MAP(face, typename boost::graph_traits<Graph>::fa
         {}
 
         template <typename T>
-        void operator()(const T&) const
+        void visit(const T&) const
         {}
 
         void done() const
diff --git a/Polygon_mesh_processing/examples/Polygon_mesh_processing/triangulate_faces_split_visitor_example.cpp b/Polygon_mesh_processing/examples/Polygon_mesh_processing/triangulate_faces_split_visitor_example.cpp
index 77d302d96e2..1fbfe9d0a0a 100644
--- a/Polygon_mesh_processing/examples/Polygon_mesh_processing/triangulate_faces_split_visitor_example.cpp
+++ b/Polygon_mesh_processing/examples/Polygon_mesh_processing/triangulate_faces_split_visitor_example.cpp
@@ -42,7 +42,8 @@ public:
 };
 
 
-struct Visitor {
+struct Visitor
+{
    typedef boost::unordered_map<face_descriptor,face_descriptor> Container;
 
   Container& container;
@@ -60,7 +61,7 @@ struct Visitor {
     container.erase(it);
   }
 
-  void operator()(face_descriptor fd)
+  void visit(face_descriptor fd)
   {
     std::cout << "  " << fd;
     container[fd]=qfd;
diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/triangulate_faces.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/triangulate_faces.h
index a35056271ad..9f9fbcddb4f 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/triangulate_faces.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/triangulate_faces.h
@@ -127,8 +127,8 @@ public:
       {
         res = CGAL::Euler::split_face(v1, v3, pmesh);
       }
-      visitor(face(res,pmesh));
-      visitor(face(opposite(res,pmesh),pmesh));
+      visitor.visit(face(res,pmesh));
+      visitor.visit(face(opposite(res,pmesh),pmesh));
       visitor.done();
     }
     else
@@ -276,7 +276,7 @@ public:
         set_next(h2, h0, pmesh);
 
         Euler::fill_hole(h0, pmesh);
-        visitor(face(h0, pmesh));
+        visitor.visit(face(h0, pmesh));
       }
     }
     visitor.done();
@@ -327,8 +327,8 @@ public:
         first=false;
       else
         f=add_face(pmesh);
-      visitor(f);
-      
+      visitor.visit(f);
+
       std::array<int, 4> indices =
         make_array( triangle.first,
                     triangle.second,
@@ -458,12 +458,12 @@ bool triangulate_face(typename boost::graph_traits<PolygonMesh>::face_descriptor
 
   //Option
   bool use_cdt = choose_parameter(get_parameter(np, internal_np::use_delaunay_triangulation), true);
-  
+
   typedef typename GetSplitVisitor<NamedParameters>::type SplitVisitor;
   typedef typename GetSplitVisitor<NamedParameters>::DummySplitVisitor DummySplitVisitor;
   SplitVisitor visitor = choose_param(get_param(np, internal_np::split_visitor),
                                       DummySplitVisitor());
-  
+
   internal::Triangulate_modifier<PolygonMesh, VPMap, Kernel, SplitVisitor> modifier(vpmap);
   return modifier.triangulate_face(f, pmesh, use_cdt, visitor);
 }