diff -ruBbiw gil/boost/gil/extension/io/png_io_private.hpp boost/boost/include/boost-1_34/boost/gil/extension/io/png_io_private.hpp
--- gil/boost/gil/extension/io/png_io_private.hpp	2007-05-11 01:32:39.000000000 +0100
+++ boost/boost/include/boost-1_34/boost/gil/extension/io/png_io_private.hpp	2007-08-06 11:05:06.000000000 +0100
@@ -20,6 +20,7 @@
 
 #include <algorithm>
 #include <vector>
+#include <boost/detail/endian.hpp>
 #include <boost/static_assert.hpp>
 #include "../../gil_all.hpp"
 #include "io_error.hpp"
@@ -162,6 +163,10 @@
         png_init_io(_png_ptr, get());
         png_set_sig_bytes(_png_ptr,PNG_BYTES_TO_CHECK);
         png_read_info(_png_ptr, _info_ptr);
+#ifdef BOOST_LITTLE_ENDIAN
+				if (16 == png_get_bit_depth (_png_ptr, _info_ptr))
+					png_set_swap (_png_ptr);
+#endif
     }
 public:
     png_reader(FILE* file          ) : file_mgr(file)           { init(); }
@@ -337,6 +342,11 @@
                      PNG_INTERLACE_NONE,
                      PNG_COMPRESSION_TYPE_DEFAULT,PNG_FILTER_TYPE_DEFAULT);
         png_write_info(_png_ptr,_info_ptr);
+#ifdef BOOST_LITTLE_ENDIAN
+				if (16 == png_write_support_private<typename channel_type<View>::type
+					, typename color_space_type<View>::type>::bit_depth)
+					png_set_swap(_png_ptr);
+#endif
         std::vector<pixel<typename channel_type<View>::type,
                           layout<typename color_space_type<View>::type> > > row(view.width());
         for(int y=0;y<view.height();++y) {