diff --git a/gtk2_ardour/automation_time_axis.cc b/gtk2_ardour/automation_time_axis.cc
index 4ba09120ad..7b44bac1d8 100644
--- a/gtk2_ardour/automation_time_axis.cc
+++ b/gtk2_ardour/automation_time_axis.cc
@@ -558,7 +558,7 @@ AutomationTimeAxisView::build_display_menu ()
 }
 
 void
-AutomationTimeAxisView::add_automation_event (ArdourCanvas::Item* /*item*/, GdkEvent* /*event*/, framepos_t when, double y)
+AutomationTimeAxisView::add_automation_event (GdkEvent* event, framepos_t when, double y)
 {
 	if (!_line) {
 		return;
@@ -578,6 +578,8 @@ AutomationTimeAxisView::add_automation_event (ArdourCanvas::Item* /*item*/, GdkE
 
 	boost::shared_ptr<AutomationList> list = _line->the_list ();
 
+	_editor.snap_to_with_modifier (when, event);
+
 	_session->begin_reversible_command (_("add automation event"));
 	XMLNode& before = list->get_state();
 
diff --git a/gtk2_ardour/automation_time_axis.h b/gtk2_ardour/automation_time_axis.h
index a48b1f9b2a..7706ed7ee3 100644
--- a/gtk2_ardour/automation_time_axis.h
+++ b/gtk2_ardour/automation_time_axis.h
@@ -72,7 +72,7 @@ class AutomationTimeAxisView : public TimeAxisView {
 	void set_samples_per_unit (double);
 	std::string name() const { return _name; }
 
-	void add_automation_event (ArdourCanvas::Item *item, GdkEvent *event, framepos_t, double);
+	void add_automation_event (GdkEvent *, framepos_t, double);
 
 	void clear_lines ();
 
diff --git a/gtk2_ardour/editor_mouse.cc b/gtk2_ardour/editor_mouse.cc
index 6419591716..e039983a67 100644
--- a/gtk2_ardour/editor_mouse.cc
+++ b/gtk2_ardour/editor_mouse.cc
@@ -1474,7 +1474,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 			case AutomationTrackItem:
 				atv = dynamic_cast<AutomationTimeAxisView*>(clicked_axisview);
 				if (atv) {
-					atv->add_automation_event (item, event, where, event->button.y);
+					atv->add_automation_event (event, where, event->button.y);
 				}
 				return true;
 				break;
@@ -1502,7 +1502,7 @@ Editor::button_release_handler (ArdourCanvas::Item* item, GdkEvent* event, ItemT
 
 			case AutomationTrackItem:
 				dynamic_cast<AutomationTimeAxisView*>(clicked_axisview)->
-					add_automation_event (item, event, where, event->button.y);
+					add_automation_event (event, where, event->button.y);
 				return true;
 				break;
 			default:
diff --git a/gtk2_ardour/public_editor.h b/gtk2_ardour/public_editor.h
index f5d7dad522..d42605eb1b 100644
--- a/gtk2_ardour/public_editor.h
+++ b/gtk2_ardour/public_editor.h
@@ -387,6 +387,8 @@ class PublicEditor : public Gtk::Window, public PBD::StatefulDestructible {
 	virtual ARDOUR::Location* find_location_from_marker (Marker *, bool &) const = 0;
 	virtual Marker* find_marker_from_location_id (PBD::ID const &, bool) const = 0;
 
+	virtual void snap_to_with_modifier (framepos_t &, GdkEvent const *, int32_t direction = 0, bool for_mark = false) = 0;
+	
 	/// Singleton instance, set up by Editor::Editor()
 
 	static PublicEditor* _instance;