diff --git a/modules/mol/mm/pymod/export_block_modifiers.cc b/modules/mol/mm/pymod/export_block_modifiers.cc
index a8bca930a680a28aca4eee8f358a08a8a217e610..e08ae0cf3e4086b4f825b46dc171fd71c2d50ef3 100644
--- a/modules/mol/mm/pymod/export_block_modifiers.cc
+++ b/modules/mol/mm/pymod/export_block_modifiers.cc
@@ -78,7 +78,7 @@ void export_BlockModifiers()
     .def("ApplyOnBuildingBlock",&ost::mol::mm::GromacsBlockModifier::ApplyOnBuildingBlock,(arg("block")))
     .def("ApplyOnResidue",&ost::mol::mm::GromacsBlockModifier::ApplyOnResidue,(arg("residue"),arg("residue")))
     .def("AddReplaceRule",&ost::mol::mm::GromacsBlockModifier::AddReplaceRule,(arg("name"),arg("new_name"),arg("new_type"),arg("new_charge")))
-    .def("AddAddRule",&ost::mol::mm::GromacsBlockModifier::AddAddRule,(arg("number"),arg("method"),arg("atom_names"),arg("anchors"),arg("type"),arg("charge")))
+    .def("AddAddRule",&WrapAddAddRule,(arg("number"),arg("method"),arg("atom_names"),arg("anchors"),arg("type"),arg("charge")))
     .def("AddBond",&ost::mol::mm::GromacsBlockModifier::AddBond,(arg("bond")))
     .def("AddAngle",&ost::mol::mm::GromacsBlockModifier::AddAngle,(arg("angle")))
     .def("AddDihedral",&ost::mol::mm::GromacsBlockModifier::AddDihedral,(arg("dihedral")))