diff --git a/include/pybind11/pybind11.h b/include/pybind11/pybind11.h
index b6de43116..c4f9426d1 100644
--- a/include/pybind11/pybind11.h
+++ b/include/pybind11/pybind11.h
@@ -470,6 +470,7 @@ public:
                           sibling((handle) attr(name_)), extra...);
         /* PyModule_AddObject steals a reference to 'func' */
         PyModule_AddObject(ptr(), name_, func.inc_ref().ptr());
+        func.attr("__module__") = attr("__name__");
         return *this;
     }