diff --git a/gtk2_ardour/audio_time_axis.cc b/gtk2_ardour/audio_time_axis.cc
index 8d48da7040..8ca04c7bdb 100644
--- a/gtk2_ardour/audio_time_axis.cc
+++ b/gtk2_ardour/audio_time_axis.cc
@@ -397,7 +397,7 @@ AudioTimeAxisView::build_automation_action_menu (bool for_selection)
 					 (!pan_tracks.empty() && string_is_affirmative (pan_tracks.front()->gui_property ("visible"))));
 
 	set<Evoral::Parameter> const & params = _route->pannable()->what_can_be_automated ();
-	for (set<Evoral::Parameter>::iterator p = params.begin(); p != params.end(); ++p) {
+	for (set<Evoral::Parameter>::const_iterator p = params.begin(); p != params.end(); ++p) {
 		_main_automation_menu_map[*p] = pan_automation_item;
 	}
 }
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index a4c9713df5..c3d8a1ddd5 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -3291,7 +3291,7 @@ MidiRegionView::selection_as_cut_buffer () const
 {
 	Notes notes;
 
-	for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
+	for (Selection::const_iterator i = _selection.begin(); i != _selection.end(); ++i) {
 		NoteType* n = (*i)->note().get();
 		notes.insert (boost::shared_ptr<NoteType> (new NoteType (*n)));
 	}