diff --git a/modules/mol/base/pymod/export_bond.cc b/modules/mol/base/pymod/export_bond.cc
index 215f9a37d99c304642f99985f516da658f93064a..a972ce175dde361423a6ecbc5b59403749c84d6a 100644
--- a/modules/mol/base/pymod/export_bond.cc
+++ b/modules/mol/base/pymod/export_bond.cc
@@ -47,10 +47,10 @@ void export_Bond()
     .add_property("valid", &BondHandle::IsValid)
     .def("GetFirst", &BondHandle::GetFirst)    
     .def("GetSecond",&BondHandle::GetSecond)
-    .def("GetOther",&BondHandle::GetOther)
+    .def("GetOther",&BondHandle::GetOther, arg("other_atom"))
     .def("GetLength",&BondHandle::GetLength)
     .def("GetBondOrder",&BondHandle::GetBondOrder)
-    .def("SetBondOrder",&BondHandle::SetBondOrder)
+    .def("SetBondOrder",&BondHandle::SetBondOrder, arg("order"))
     .def("IsValid", &BondHandle::IsValid)       
     .def("GetHashCode", &BondHandle::GetHashCode)
     .def(self == self)