diff --git a/Stream_support/include/CGAL/IO/OFF/File_header_OFF_impl.h b/Stream_support/include/CGAL/IO/OFF/File_header_OFF_impl.h
index 520e6abe76d..4e5d776b261 100644
--- a/Stream_support/include/CGAL/IO/OFF/File_header_OFF_impl.h
+++ b/Stream_support/include/CGAL/IO/OFF/File_header_OFF_impl.h
@@ -210,7 +210,6 @@ CGAL_INLINE_FUNCTION
 std::ostream& operator<<( std::ostream& out, const File_header_OFF& h) {
     if ( h.comments()) {
         out << "# Output of a CGAL tool\n";
-        out << static_cast<const File_header_extended_OFF&>( h);
     }
     if ( h.has_textures())
         out << "ST";
@@ -250,12 +249,8 @@ std::istream& operator>>( std::istream& in, File_header_OFF& h) {
     h.set_off_header( false);
     char c;
     while ( (in >> c) && c == '#') {
-        if ( in.get(c) && c == 'C' &&
-             in.get(c) && c == 'B' &&
-             in.get(c) && c == 'P') {
-            in >> static_cast<File_header_extended_OFF&>( h);
-        } else if ( c != '\n')
-            in >> skip_until_EOL;
+      if ( c != '\n')
+        in >> skip_until_EOL;
     }
     if ( ! in )
       return in;
diff --git a/Stream_support/include/CGAL/IO/OFF/File_header_extended_OFF_impl.h b/Stream_support/include/CGAL/IO/OFF/File_header_extended_OFF_impl.h
index 2405be2d337..5b47cdab293 100644
--- a/Stream_support/include/CGAL/IO/OFF/File_header_extended_OFF_impl.h
+++ b/Stream_support/include/CGAL/IO/OFF/File_header_extended_OFF_impl.h
@@ -133,72 +133,5 @@ operator+=( const File_header_extended_OFF& header) {
     return *this;
 }
 
-#define CGAL_OUT(item)     out << "# " #item " " << h.item() << '\n'
-#define CGAL_OUTBOOL(item) out << "# " #item " " <<(h.item() ? '1':'0') << '\n'
-
-// Write extended header incl. CGAL/ENDCBP keywords.
-CGAL_INLINE_FUNCTION
-std::ostream& operator<<( std::ostream& out,
-                          const File_header_extended_OFF& h) {
-    out << "#CBP\n";
-    CGAL_OUTBOOL( polyhedral_surface);
-    CGAL_OUT(     halfedges);
-    CGAL_OUTBOOL( triangulated);
-    CGAL_OUTBOOL( non_empty_facets);
-    CGAL_OUTBOOL( terrain);
-    CGAL_OUTBOOL( normalized_to_sphere);
-    CGAL_OUT(     radius);
-    CGAL_OUTBOOL( rounded);
-    CGAL_OUT(     rounded_bits);
-    out << "# ENDCBP\n" << std::endl;
-    return out;
-}
-#undef CGAL_OUT
-#undef OUTBOOL
-
-#define CGAL_IN(item,type)                         \
-    else if ( std::strcmp( keyword, #item) == 0) { \
-        type t;                               \
-        in >> t;                              \
-        h.set_##item( t);                     \
-    }
-
-#define CGAL_INBOOL(item)                          \
-    else if ( std::strcmp( keyword, #item) == 0) { \
-        in >> c;                              \
-        h.set_##item( c == '1');              \
-    }
-
-// Scan extended header. The CBP keyword must be read already.
-CGAL_INLINE_FUNCTION
-std::istream& operator>>( std::istream& in, File_header_extended_OFF& h) {
-    const int max_keyword = 42;
-    char c;
-    char keyword[max_keyword] = "";
-    in >> keyword;
-    while ( in && std::strcmp( keyword, "ENDCBP") != 0) {
-        if ( std::strcmp( keyword, "#") == 0)
-            ;
-        CGAL_INBOOL( polyhedral_surface)
-        CGAL_IN(     halfedges, int)
-        CGAL_INBOOL( triangulated)
-        CGAL_INBOOL( non_empty_facets)
-        CGAL_INBOOL( terrain)
-        CGAL_INBOOL( normalized_to_sphere)
-        CGAL_IN(     radius, double)
-        CGAL_INBOOL( rounded)
-        CGAL_IN(     rounded_bits, int)
-        else if ( h.verbose()) {
-            std::cerr << "warning: File_header_extended_OFF: unknown key '"
-                      << keyword << "'." << std::endl;
-        }
-        in >> keyword;
-    }
-    in >> skip_until_EOL >> skip_comment_OFF;
-    return in;
-}
-#undef CGAL_IN
-#undef CGAL_INBOOL
-
 } //namespace CGAL
 // EOF //