diff --git a/gtk2_ardour/audio_trigger_properties_box.cc b/gtk2_ardour/audio_trigger_properties_box.cc
index 2075c2d803..c97178693c 100644
--- a/gtk2_ardour/audio_trigger_properties_box.cc
+++ b/gtk2_ardour/audio_trigger_properties_box.cc
@@ -110,6 +110,8 @@ AudioTriggerPropertiesBox::AudioTriggerPropertiesBox ()
 	eTempoBox->set_edge_color (0x000000ff); // black
 	eTempoBox->add (*bpm_table);
 
+	eTempoBox->show_all();
+
 	/* -------------- Clip start&length (redundant with the trimmer gui handles?)  ----------*/
 	row = 0;