diff --git a/test/Jamfile b/test/Jamfile
index 0d494b70..cc0d3ca8 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -54,6 +54,7 @@ rule bpl-test ( name ? : files * )
 bpl-test bienstman1 ;
 bpl-test bienstman2 ;
 bpl-test bienstman3 ;
+bpl-test bienstman4 ;
 bpl-test try : newtest.py m1.cpp m2.cpp ;
 bpl-test builtin_converters : test_builtin_converters.py test_builtin_converters.cpp ;
 bpl-test test_pointer_adoption ;
diff --git a/test/bienstman4.cpp b/test/bienstman4.cpp
new file mode 100644
index 00000000..76a1c209
--- /dev/null
+++ b/test/bienstman4.cpp
@@ -0,0 +1,38 @@
+// Copyright David Abrahams 2002. Permission to copy, use,
+// modify, sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+
+#include <boost/python/module.hpp>
+#include <boost/python/class.hpp>
+#include <boost/python/implicit.hpp>
+#include <boost/mpl/type_list.hpp>
+
+struct T1 {};
+
+struct Term {Term(T1 const&) {} };
+
+struct Expression {void add(Term const&) {} };
+
+BOOST_PYTHON_MODULE_INIT(bienstman4_ext)
+{
+  using namespace boost::python;
+  using boost::mpl::type_list;
+
+  implicitly_convertible<T1,Term>();
+
+  module("bienstman4_ext")
+    .add(class_<Expression>("Expression")
+         .def("add", &Expression::add))
+    .add(class_<T1>("T1"))
+    .add(class_<Term>("Term")
+         .def_init(type_list<T1&>()))
+    ;
+  
+
+  T1 t1;
+  Expression e;
+  e.add(t1);
+}
+
diff --git a/test/bienstman4.py b/test/bienstman4.py
new file mode 100644
index 00000000..2fede1fc
--- /dev/null
+++ b/test/bienstman4.py
@@ -0,0 +1,18 @@
+'''
+>>> from bienstman4_ext import *
+>>> t1 = T1()
+>>> e = Expression()
+>>> e.add(t1)
+'''
+def run(args = None):
+    import sys
+    import doctest
+
+    if args is not None:
+        sys.argv = args
+    return doctest.testmod(sys.modules.get(__name__))
+    
+if __name__ == '__main__':
+    print "running..."
+    import sys
+    sys.exit(run()[0])