diff --git a/gtk2_ardour/audio_clock.cc b/gtk2_ardour/audio_clock.cc
index 0be3859e2d..1a2e3cb220 100644
--- a/gtk2_ardour/audio_clock.cc
+++ b/gtk2_ardour/audio_clock.cc
@@ -68,7 +68,6 @@ using namespace Temporal;
 
 using Gtkmm2ext::Keyboard;
 
-sigc::signal<void> AudioClock::ModeChanged;
 vector<AudioClock*> AudioClock::clocks;
 
 #define BBT_BAR_CHAR "|"
@@ -79,7 +78,6 @@ AudioClock::AudioClock (const string& clock_name, bool transient, const string&
 			bool accept_on_focus_out)
 	: ops_menu (0)
 	, _name (clock_name)
-	, is_transient (transient)
 	, is_duration (duration)
 	, editable (allow_edit)
 	, _follows_playhead (follows_playhead)
@@ -120,7 +118,7 @@ AudioClock::AudioClock (const string& clock_name, bool transient, const string&
 	set_mode (Timecode);
 	AudioClock::set (last_when(), true);
 
-	if (!is_transient) {
+	if (!transient) {
 		clocks.push_back (this);
 	}
 
@@ -2314,10 +2312,6 @@ AudioClock::set_mode (Mode m, bool noemit)
 
 	AudioClock::set (last_when(), true);
 
-	if (!is_transient && !noemit) {
-		ModeChanged (); /* EMIT SIGNAL (the static one)*/
-	}
-
 	mode_changed (); /* EMIT SIGNAL (the member one) */
 }
 
diff --git a/gtk2_ardour/audio_clock.h b/gtk2_ardour/audio_clock.h
index f1b7cff6c6..70920201c8 100644
--- a/gtk2_ardour/audio_clock.h
+++ b/gtk2_ardour/audio_clock.h
@@ -108,7 +108,6 @@ class AudioClock : public CairoWidget, public ARDOUR::SessionHandlePtr
 	sigc::signal<void> mode_changed;
 	sigc::signal<void> ChangeAborted;
 
-	static sigc::signal<void> ModeChanged;
 	static std::vector<AudioClock*> clocks;
 
 	protected:
@@ -127,7 +126,6 @@ class AudioClock : public CairoWidget, public ARDOUR::SessionHandlePtr
 	private:
 	Mode             _mode;
 	std::string      _name;
-	bool              is_transient;
 	bool              is_duration;
 	bool              editable;
 	/** true if this clock follows the playhead, meaning that certain operations are redundant */