diff --git a/gtk2_ardour/mixer_snapshot_substitution_dialog.cc b/gtk2_ardour/mixer_snapshot_substitution_dialog.cc
index 3bfdab4172..f5986bffa3 100644
--- a/gtk2_ardour/mixer_snapshot_substitution_dialog.cc
+++ b/gtk2_ardour/mixer_snapshot_substitution_dialog.cc
@@ -103,96 +103,6 @@ void MixerSnapshotSubstitutionDialog::fill_combo_box(ComboBoxText* box, const st
     }
 }
 
-// void MixerSnapshotSubstitutionDialog::on_response(int r)
-// {
-//     if(r == RESPONSE_CANCEL) {
-//         substitutions.clear();
-//         close_self();
-//         return;
-//     }
-
-//     vector<MixerSnapshot::State> dirty = _snapshot->get_routes();
-//     vector<MixerSnapshot::State> clean = _snapshot->get_routes();
-//     vector<MixerSnapshot::State> new_s;
-//     vector<MixerSnapshot::State> del_s;
-
-//     if(r == RESPONSE_ACCEPT) {
-//         for(vector<route_combo>::iterator c = substitutions.begin(); c != substitutions.end(); c++) {
-//             string route_name = (*c).first->name();
-//             string subst_name = (*c).second->get_active_text();
-//             int n = 0;
-//             for(vector<MixerSnapshot::State>::iterator s = dirty.begin(); s != dirty.end(); s++) {
-//                 MixerSnapshot::State state = (*s);
-//                 if(route_name == state.name) {
-//                     //state and substitution are matches
-//                     if(route_name == subst_name) {
-//                         break;
-//                     }
-
-//                     //empty sub - erase it
-//                     if(subst_name == " --- ") {
-//                         del_s.push_back(state);
-//                         break;
-//                     }
-//                 }
-//                 if(subst_name == " --- ") {
-//                     break;
-//                 }
-
-//                 bool route_state_exists = state_exists(route_name);
-//                 bool subst_state_exists = state_exists(subst_name);
-
-//                 //state exists but we are picking a different source
-//                 if(route_name != subst_name) {
-//                     if(route_state_exists && subst_state_exists) {
-//                         XMLNode copy (get_state_by_name(subst_name).node);
-//                         state.node = copy;
-//                         state.name = route_name;
-//                     }
-
-//                     //state did *not* exist, make it and add the substitute node
-//                     if(!route_state_exists && subst_state_exists) {
-//                         //copy the substitute node
-//                         XMLNode copy (get_state_by_name(subst_name).node);
-
-//                         MixerSnapshot::State s {
-//                             "",
-//                             route_name,
-//                             copy
-//                         };
-
-//                         new_s.push_back(s);
-//                     }
-//                 }
-//                 n++;
-//             }
-//         }
-//     }
-
-//     for(vector<MixerSnapshot::State>::iterator s = new_s.begin(); s != new_s.end(); s++) {
-//         dirty.push_back((*s));
-//     }
-
-//     for(vector<MixerSnapshot::State>::iterator d = del_s.begin(); d != del_s.end(); d++) {
-//         for(vector<MixerSnapshot::State>::iterator s = dirty.begin(); s != dirty.end(); s++) {
-//             if((*d).id == (*s).id) {
-//                 dirty.erase(s);
-//                 s--;
-//                 break;
-//             }
-//         }
-//     }
-
-//     for(vector<MixerSnapshot::State>::iterator s = dirty.begin(); s != dirty.end(); s++) {
-//         cout << (*s).name << endl;
-//     }
-//     substitutions.clear();
-//     _snapshot->set_route_states(dirty);
-//     _snapshot->recall();
-//     _snapshot->set_route_states(clean);
-//     close_self();
-// }
-
 bool MixerSnapshotSubstitutionDialog::state_exists(const string name)
 {
     vector<MixerSnapshot::State> routes = _snapshot->get_routes();