--- a/src/lib/libvisio_utils.cpp
+++ b/src/lib/libvisio_utils.cpp
@@ -35,6 +35,7 @@
 #include <boost/archive/iterators/binary_from_base64.hpp>
 #include <boost/archive/iterators/remove_whitespace.hpp>
 #include <boost/archive/iterators/transform_width.hpp>
+#include <boost/range/iterator_range.hpp>
 
 uint8_t libvisio::readU8(WPXInputStream *input)
 {
@@ -125,7 +126,7 @@ double libvisio::readDouble(WPXInputStream *input)
 
 void libvisio::appendFromBase64(WPXBinaryData &data, const unsigned char *base64Data, size_t base64DataLength)
 {
-  std::string base64String((const char *)base64Data, base64DataLength);
+  boost::iterator_range<const char *> base64String((const char *)base64Data, (const char *)base64Data + base64DataLength);
   typedef boost::archive::iterators::transform_width<
   boost::archive::iterators::binary_from_base64<
   boost::archive::iterators::remove_whitespace< std::string::const_iterator > >, 8, 6 > base64_decoder;