diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index 50a70518fc..4cf19a4715 100644
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -389,7 +389,7 @@ ProcessorEntry::drag_data_get (Glib::RefPtr<Gdk::DragContext> const, Gtk::Select
 }
 
 void
-ProcessorEntry::set_position (Position p, uint32_t num)
+ProcessorEntry::set_position (ProcessorPosition p, uint32_t num)
 {
 	_position = p;
 	_position_num = num;
diff --git a/gtk2_ardour/processor_box.h b/gtk2_ardour/processor_box.h
index 7614e8ac45..fb568a5c66 100644
--- a/gtk2_ardour/processor_box.h
+++ b/gtk2_ardour/processor_box.h
@@ -150,13 +150,13 @@ public:
 	bool drag_data_get (Glib::RefPtr<Gdk::DragContext> const, Gtk::SelectionData &);
 	bool can_copy_state (Gtkmm2ext::DnDVBoxChild*) const;
 
-	enum Position {
+	enum ProcessorPosition {
 		PreFader,
 		Fader,
 		PostFader
 	};
 
-	void set_position (Position, uint32_t);
+	void set_position (ProcessorPosition, uint32_t);
 	bool unknown_processor () const { return _unknown_processor; } ;
 	boost::shared_ptr<ARDOUR::Processor> processor () const;
 	void set_enum_width (Width);
@@ -176,7 +176,7 @@ public:
 protected:
 	ArdourWidgets::ArdourButton _button;
 	Gtk::VBox _vbox;
-	Position _position;
+	ProcessorPosition _position;
 	uint32_t _position_num;
 	ProcessorBox* _parent;