diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index c647681c62..b33f81f288 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -277,8 +277,8 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[], const char* localedir)
 	: Gtkmm2ext::UI (PROGRAM_NAME, X_("gui"), argcp, argvp)
 	, session_load_in_progress (false)
 	, gui_object_state (new GUIObjectState)
-	, primary_clock   (new MainClock (X_("primary"),   X_("transport"), true ))
-	, secondary_clock (new MainClock (X_("secondary"), X_("secondary"), false))
+	, primary_clock   (new MainClock (X_("primary"),   X_("transport")))
+	, secondary_clock (new MainClock (X_("secondary"), X_("secondary")))
 	, big_clock (new AudioClock (X_("bigclock"), false, "big", true, true, false, false))
 	, video_timeline(0)
 	, ignore_dual_punch (false)
diff --git a/gtk2_ardour/main_clock.cc b/gtk2_ardour/main_clock.cc
index f038b939c4..867ac3b59c 100644
--- a/gtk2_ardour/main_clock.cc
+++ b/gtk2_ardour/main_clock.cc
@@ -37,11 +37,9 @@ using namespace ARDOUR;
 
 MainClock::MainClock (
 	const std::string& clock_name,
-	const std::string& widget_name,
-	bool primary
+	const std::string& widget_name
 	)
 	: AudioClock (clock_name, false, widget_name, true, true, false, true)
-	, _primary (primary)
 	, _suspend_delta_mode_signal (false)
 	, _widget_name(widget_name)
 {
diff --git a/gtk2_ardour/main_clock.h b/gtk2_ardour/main_clock.h
index 4d26996cb0..9050f83128 100644
--- a/gtk2_ardour/main_clock.h
+++ b/gtk2_ardour/main_clock.h
@@ -28,7 +28,7 @@
 class MainClock : public AudioClock
 {
 public:
-	MainClock (const std::string& clock_name, const std::string& widget_name, bool primary);
+	MainClock (const std::string& clock_name, const std::string& widget_name);
 	void set_session (ARDOUR::Session *s);
 	void set_display_delta_mode (ARDOUR::ClockDeltaMode m);
 	void set (Temporal::timepos_t const &, bool force = false);
@@ -41,7 +41,6 @@ private:
 	void edit_current_meter ();
 	void insert_new_tempo ();
 	void insert_new_meter ();
-	bool _primary;
 	bool _suspend_delta_mode_signal;
 	std::string _widget_name;
 	ARDOUR::ClockDeltaMode _delta_mode;