diff --git a/src/mrw/iomanip.hxx b/src/mrw/iomanip.hxx
index 18196d6..f63d4f8 100644
--- a/src/mrw/iomanip.hxx
+++ b/src/mrw/iomanip.hxx
@@ -38,6 +38,13 @@ namespace mrw {
   template <class _CharT = char, class _Traits = std::char_traits<_CharT> >
       class basic_split /*: public std::basic_ostream<_CharT, _Traits>*/ {
     public:
+      basic_split(const basic_split& o):
+          _width(o._width),
+          _indent(o._indent),
+          _fill(o._fill),
+          _buffer(o._buffer.str()),
+          _os(o._os) {
+      }
       basic_split(int width=80, int indent=0, char fill=' '):
           _width(width), _indent(indent), _fill(fill), _os(0) {
         if (_width<_indent)