diff --git a/test/injected.cpp b/test/injected.cpp
index 0400ad61..31eff3cf 100755
--- a/test/injected.cpp
+++ b/test/injected.cpp
@@ -10,6 +10,7 @@
 #include <memory>
 #include <boost/shared_ptr.hpp>
 #include <boost/python/make_constructor.hpp>
+#include <boost/python/args.hpp>
 
 using namespace boost::python;
 
@@ -29,7 +30,11 @@ BOOST_PYTHON_MODULE(injected_ext)
     class_<X>("X", init<int>())
         .def("__init__", make_constructor(empty))
         .def("__init__", make_constructor(sum))
-        .def("__init__", make_constructor(product), "this is product's docstring")
+        .def("__init__", make_constructor(product
+            , default_call_policies()
+            , ( arg_("a"), arg_("b"), arg_("c"))
+            ),
+            "this is product's docstring")
         .def("value", &X::value)
         ;
 }
diff --git a/test/injected.py b/test/injected.py
index 4f6766f4..32ea0bf9 100644
--- a/test/injected.py
+++ b/test/injected.py
@@ -5,7 +5,7 @@
 >>> from injected_ext import *
 >>> X(3,5).value() - (3+5)
 0
->>> X(3,5,7).value() - (3*5*7)
+>>> X(a=3,b=5,c=7).value() - (3*5*7)
 0
 >>> X().value()
 1000