diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index 0e77ce0cfe..b0d460d07d 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -827,8 +827,8 @@ ARDOUR_UI::post_engine ()
 
 	/* set default clock modes */
 
-	primary_clock->set_mode (AudioClock::Timecode);
-	secondary_clock->set_mode (AudioClock::BBT);
+	primary_clock->set_mode (AudioClock::BBT);
+	secondary_clock->set_mode (AudioClock::Timecode);
 
 	/* start the time-of-day-clock */