diff --git a/gtk2_ardour/meterbridge.cc b/gtk2_ardour/meterbridge.cc
index 5da4d3fdb5..b6b18eff95 100644
--- a/gtk2_ardour/meterbridge.cc
+++ b/gtk2_ardour/meterbridge.cc
@@ -40,6 +40,7 @@
 
 #include "ardour/audio_track.h"
 #include "ardour/midi_track.h"
+#include "ardour/route_sorters.h"
 
 #include "meterbridge.h"
 
@@ -79,24 +80,6 @@ Meterbridge::instance ()
 	return _instance;
 }
 
-/* copy from gtk2_ardour/mixer_ui.cc -- TODO consolidate
- * used by Meterbridge::set_session() below
- */
-struct SignalOrderRouteSorter {
-	bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
-		if (a->is_master() || a->is_monitor()) {
-			/* "a" is a special route (master, monitor, etc), and comes
-			 * last in the mixer ordering
-			 */
-			return false;
-		} else if (b->is_master() || b->is_monitor()) {
-			/* everything comes before b */
-			return true;
-		}
-		return a->order_key () < b->order_key ();
-	}
-};
-
 Meterbridge::Meterbridge ()
 	: Window (Gtk::WINDOW_TOPLEVEL)
 	, VisibilityTracker (*((Gtk::Window*) this))
@@ -451,7 +434,7 @@ Meterbridge::set_session (Session* s)
 	_show_master = _session->config.get_show_master_on_meterbridge();
 	_show_midi = _session->config.get_show_midi_on_meterbridge();
 
-	SignalOrderRouteSorter sorter;
+	ARDOUR::SignalOrderRouteSorter sorter;
 	boost::shared_ptr<RouteList> routes = _session->get_routes();
 
 	RouteList copy(*routes);
diff --git a/gtk2_ardour/mixer_ui.cc b/gtk2_ardour/mixer_ui.cc
index 8534d40d32..e9c36690a6 100644
--- a/gtk2_ardour/mixer_ui.cc
+++ b/gtk2_ardour/mixer_ui.cc
@@ -41,6 +41,7 @@
 #include "ardour/midi_track.h"
 #include "ardour/plugin_manager.h"
 #include "ardour/route_group.h"
+#include "ardour/route_sorters.h"
 #include "ardour/session.h"
 
 #include "keyboard.h"
@@ -1100,28 +1101,12 @@ Mixer_UI::strip_width_changed ()
 
 }
 
-struct SignalOrderRouteSorter {
-    bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
-	    if (a->is_master() || a->is_monitor()) {
-		    /* "a" is a special route (master, monitor, etc), and comes
-		     * last in the mixer ordering
-		     */
-		    return false;
-	    } else if (b->is_master() || b->is_monitor()) {
-		    /* everything comes before b */
-		    return true;
-	    }
-	    return a->order_key () < b->order_key ();
-
-    }
-};
-
 void
 Mixer_UI::initial_track_display ()
 {
 	boost::shared_ptr<RouteList> routes = _session->get_routes();
 	RouteList copy (*routes);
-	SignalOrderRouteSorter sorter;
+	ARDOUR::SignalOrderRouteSorter sorter;
 
 	copy.sort (sorter);
 
diff --git a/libs/ardour/ardour/route_sorters.h b/libs/ardour/ardour/route_sorters.h
new file mode 100644
index 0000000000..022d5a24c3
--- /dev/null
+++ b/libs/ardour/ardour/route_sorters.h
@@ -0,0 +1,44 @@
+/*
+    Copyright (C) 2000-2014 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libardour_route_sorters_h__
+#define __libardour_route_sorters_h__
+
+#include "ardour/route.h"
+
+namespace ARDOUR {
+
+struct SignalOrderRouteSorter {
+	bool operator() (boost::shared_ptr<Route> a, boost::shared_ptr<Route> b) {
+		if (a->is_master() || a->is_monitor()) {
+			/* "a" is a special route (master, monitor, etc), and comes
+			 * last in the mixer ordering
+			 */
+			return false;
+		} else if (b->is_master() || b->is_monitor()) {
+			/* everything comes before b */
+			return true;
+		}
+		return a->order_key () < b->order_key ();
+	}
+};
+
+} // namespace
+
+#endif /* __libardour_route_sorters_h__ */