diff --git a/libs/surfaces/osc/osc.cc b/libs/surfaces/osc/osc.cc
index c29469667c..8ce7969307 100644
--- a/libs/surfaces/osc/osc.cc
+++ b/libs/surfaces/osc/osc.cc
@@ -362,37 +362,32 @@ OSC::register_callbacks()
 		REGISTER_CALLBACK (serv, "/ardour/toggle_all_rec_enables", "", toggle_all_rec_enables);
 
 		/*
-		 * NOTE:  these messages are provided for (arguably broken) apps
+		 * NOTE: these messages are provided for (arguably broken) apps
 		 *   that MUST send float args ( TouchOSC and Lemur ).
 		 * Normally these ardour transport messages don't require an argument,
 		 * so we're providing redundant calls with vestigial "float" args.
 		 *
-		 * Is it really useful to ignore the parameter?
-		 *  http://hexler.net/docs/touchosc-controls-reference suggests that
-		 *  push buttons do send 0,1. We will have to provide semantic equivalents
-		 *  rather than simply ignore the parameter.
-		 *  e.g  push & release the button will send
-		 *    .../undo f 1
-		 *    .../undo f 0
-		 *  resulting in two undos.
+		 * These controls are active on 1.0 only (to prevent duplicate action on
+		 * press "/button 1", and release "/button 0")
+		 * http://hexler.net/docs/touchosc-controls-reference
 		 */
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/loop_toggle", "f", loop_toggle);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/add_marker", "f", add_marker);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/goto_start", "f", goto_start);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/goto_end", "f", goto_end);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/rewind", "f", rewind);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/ffwd", "f", ffwd);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/transport_stop", "f", transport_stop);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/transport_play", "f", transport_play);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/save_state", "f", save_state);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/prev_marker", "f", prev_marker);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/next_marker", "f", next_marker);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/undo", "f", undo);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/redo", "f", redo);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/toggle_punch_in", "f", toggle_punch_in);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/toggle_punch_out", "f", toggle_punch_out);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/rec_enable_toggle", "f", rec_enable_toggle);
-		REGISTER_CALLBACK (serv, "/ardour/unused_argument/toggle_all_rec_enables", "f", toggle_all_rec_enables);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/loop_toggle", "f", loop_toggle);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/add_marker", "f", add_marker);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/goto_start", "f", goto_start);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/goto_end", "f", goto_end);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/rewind", "f", rewind);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/ffwd", "f", ffwd);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/transport_stop", "f", transport_stop);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/transport_play", "f", transport_play);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/save_state", "f", save_state);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/prev_marker", "f", prev_marker);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/next_marker", "f", next_marker);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/undo", "f", undo);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/redo", "f", redo);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/toggle_punch_in", "f", toggle_punch_in);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/toggle_punch_out", "f", toggle_punch_out);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/rec_enable_toggle", "f", rec_enable_toggle);
+		REGISTER_CALLBACK (serv, "/ardour/pushbutton/toggle_all_rec_enables", "f", toggle_all_rec_enables);
 
 		REGISTER_CALLBACK (serv, "/ardour/routes/mute", "ii", route_mute);
 		REGISTER_CALLBACK (serv, "/ardour/routes/solo", "ii", route_solo);
diff --git a/libs/surfaces/osc/osc.h b/libs/surfaces/osc/osc.h
index 3718d25525..c19a8d0bb4 100644
--- a/libs/surfaces/osc/osc.h
+++ b/libs/surfaces/osc/osc.h
@@ -145,7 +145,8 @@ class OSC : public ARDOUR::ControlProtocol, public AbstractUI<OSCUIRequest>
         static int _ ## name (const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data) { \
 		return static_cast<OSC*>(user_data)->cb_ ## name (path, types, argv, argc, data); \
         } \
-        int cb_ ## name (const char *, const char *, lo_arg **, int, void *) { \
+        int cb_ ## name (const char *, const char *types, lo_arg ** argv, int argc, void *) { \
+		if (argc > 0 && !strcmp (types, "f") && argv[0]->f != 1.0) { return 0; } \
 		name (); \
 		return 0; \
 	}