diff --git a/modules/conop/pymod/export_compound.cc b/modules/conop/pymod/export_compound.cc
index d193801bb75d847786e9f9bf6a5ce7ac300005bf..a22586c10dc567ec9fd920572831f935afd2b2eb 100644
--- a/modules/conop/pymod/export_compound.cc
+++ b/modules/conop/pymod/export_compound.cc
@@ -128,6 +128,7 @@ void export_Compound() {
     .def("AddAtom", &Compound::AddAtom)
     .def("AddBond", &Compound::AddBond)
     .def("IsPeptideLinking", &Compound::IsPeptideLinking)
+    .def("IsNucleotideLinking", &Compound::IsNucleotideLinking)
     .add_property("chem_class", &get_chemclass,
                   &set_chemclass)
     .add_property("chem_type", &get_chemtype)