diff --git a/BGL/include/CGAL/boost/graph/io.h b/BGL/include/CGAL/boost/graph/io.h
index bfd4f410586..2deabecc2e6 100644
--- a/BGL/include/CGAL/boost/graph/io.h
+++ b/BGL/include/CGAL/boost/graph/io.h
@@ -21,110 +21,4 @@
 #include <CGAL/boost/graph/IO/VTK.h>
 #include <CGAL/boost/graph/IO/WRL.h>
 
-namespace CGAL{
-
-//not for now.
-/*
-template <class FaceGraph, typename NamedParameters>
-bool read_polygon_mesh(std::istream& is,
-                       FaceGraph& g,
-                       const NamedParameters& np)
-{
-  bool ok = false;
-  ok = read_OFF(is, g, np, false);
-  if(ok)
-    return true;
-  g.clear();
-  is.clear();//reset the error state
-  is.seekg (0, is.beg);
-  ok = read_OBJ(is, g, np, false);
-  if(ok)
-    return true;
-  g.clear();
-  is.clear();
-  is.seekg (0, is.beg);
-  ok = read_PLY(is, g, np, false);
-  if(ok)
-    return true;
-  g.clear();
-  is.clear();
-  is.seekg (0, is.beg);
-  ok = read_STL(is, g, np, false);
-  if(ok)
-    return true;
-  g.clear();
-  is.clear();
-  is.seekg (0, is.beg);
-  ok = read_GOCAD(is, g, np, false);
-  return ok;
-}
-
-template <class FaceGraph>
-bool read_polygon_mesh(std::istream& is,
-                       FaceGraph& g)
-{
-  return read_polygon_mesh(is, g, parameters::all_default());
-}
-*/
-/*!
- *
- */
-template <class FaceGraph, typename NamedParameters>
-bool read_polygon_mesh(const std::string& fname,
-                       FaceGraph& g,
-                       const NamedParameters& np)
-{
-  if (fname.find(".TS") != std::string::npos) {
-    return read_GOCAD(fname, g, np);
-  }
-
-  if (fname.find(".obj") != std::string::npos) {
-    return read_OBJ(fname, g, np);
-  }
-
-  if (fname.find(".off") != std::string::npos) {
-    return read_OFF(fname, g, np);
-  }
-
-  if (fname.find(".ply") != std::string::npos) {
-    return read_PLY(fname, g, np);
-  }
-
-  if (fname.find(".stl") != std::string::npos) {
-    return read_STL(fname, g, np);
-  }
-
-  if (fname.find(".vtp") != std::string::npos) {
-    return read_VTP(fname, g, np);
-  }
-
-  return false;
-}
-
-template <class FaceGraph>
-bool read_polygon_mesh(const std::string& fname,
-                       FaceGraph& g)
-{
-  return read_polygon_mesh(fname, g, parameters::all_default());
-}
-
-
-
-template <class FaceGraph, typename NamedParameters>
-bool read_polygon_mesh(const char* fname,
-                       FaceGraph& g,
-                       const NamedParameters& np)
-{
-  return read_polygon_mesh(std::string(fname), g, np);
-}
-
-template <class FaceGraph>
-bool read_polygon_mesh(const char* fname,
-                       FaceGraph& g)
-{
-  return read_polygon_mesh(fname, g, parameters::all_default());
-}
-
-
-}//end CGAL
 #endif // CGAL_BOOST_GRAPH_IO_H
diff --git a/BGL/include/CGAL/boost/graph/polygon_mesh_io.h b/BGL/include/CGAL/boost/graph/polygon_mesh_io.h
new file mode 100644
index 00000000000..d139934b82e
--- /dev/null
+++ b/BGL/include/CGAL/boost/graph/polygon_mesh_io.h
@@ -0,0 +1,121 @@
+// Copyright (c) 2020  GeometryFactory (France).  All rights reserved.
+//
+// This file is part of CGAL (www.cgal.org)
+//
+// $URL$
+// $Id$
+// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
+//
+// Author(s)     : Maxime Gimeno
+#ifndef CGAL_BOOST_GRAPH_POLYGON_MESH_IO_H
+#define CGAL_BOOST_GRAPH_POLYGON_MESH_IO_H
+
+#include <CGAL/boost/graph/io.h>
+namespace CGAL{
+
+//not for now.
+/*
+template <class FaceGraph, typename NamedParameters>
+bool read_polygon_mesh(std::istream& is,
+                       FaceGraph& g,
+                       const NamedParameters& np)
+{
+  bool ok = false;
+  ok = read_OFF(is, g, np, false);
+  if(ok)
+    return true;
+  g.clear();
+  is.clear();//reset the error state
+  is.seekg (0, is.beg);
+  ok = read_OBJ(is, g, np, false);
+  if(ok)
+    return true;
+  g.clear();
+  is.clear();
+  is.seekg (0, is.beg);
+  ok = read_PLY(is, g, np, false);
+  if(ok)
+    return true;
+  g.clear();
+  is.clear();
+  is.seekg (0, is.beg);
+  ok = read_STL(is, g, np, false);
+  if(ok)
+    return true;
+  g.clear();
+  is.clear();
+  is.seekg (0, is.beg);
+  ok = read_GOCAD(is, g, np, false);
+  return ok;
+}
+
+template <class FaceGraph>
+bool read_polygon_mesh(std::istream& is,
+                       FaceGraph& g)
+{
+  return read_polygon_mesh(is, g, parameters::all_default());
+}
+*/
+/*!
+ *
+ */
+template <class FaceGraph, typename NamedParameters>
+bool read_polygon_mesh(const std::string& fname,
+                       FaceGraph& g,
+                       const NamedParameters& np)
+{
+  if (fname.find(".TS") != std::string::npos) {
+    return read_GOCAD(fname, g, np);
+  }
+
+  if (fname.find(".obj") != std::string::npos) {
+    return read_OBJ(fname, g, np);
+  }
+
+  if (fname.find(".off") != std::string::npos) {
+    return read_OFF(fname, g, np);
+  }
+
+  if (fname.find(".ply") != std::string::npos) {
+    return read_PLY(fname, g, np);
+  }
+
+  if (fname.find(".stl") != std::string::npos) {
+    return read_STL(fname, g, np);
+  }
+
+  if (fname.find(".vtp") != std::string::npos) {
+    return read_VTP(fname, g, np);
+  }
+
+  return false;
+}
+
+template <class FaceGraph>
+bool read_polygon_mesh(const std::string& fname,
+                       FaceGraph& g)
+{
+  return read_polygon_mesh(fname, g, parameters::all_default());
+}
+
+
+
+template <class FaceGraph, typename NamedParameters>
+bool read_polygon_mesh(const char* fname,
+                       FaceGraph& g,
+                       const NamedParameters& np)
+{
+  return read_polygon_mesh(std::string(fname), g, np);
+}
+
+template <class FaceGraph>
+bool read_polygon_mesh(const char* fname,
+                       FaceGraph& g)
+{
+  return read_polygon_mesh(fname, g, parameters::all_default());
+}
+
+
+}//end CGAL
+
+#endif // CGAL_BOOST_GRAPH_POLYGON_MESH_IO_H
diff --git a/BGL/test/BGL/test_bgl_read_write.cpp b/BGL/test/BGL/test_bgl_read_write.cpp
index b4012fc8c88..bf3fc5a435b 100644
--- a/BGL/test/BGL/test_bgl_read_write.cpp
+++ b/BGL/test/BGL/test_bgl_read_write.cpp
@@ -18,7 +18,7 @@
 
 #endif
 
-#include <CGAL/boost/graph/io.h>
+#include <CGAL/boost/graph/polygon_mesh_io.h>
 
 #include <CGAL/IO/VTK.h>
 #include <CGAL/IO/polygon_soup_io.h>