diff --git a/gtk2_ardour/audio_trigger_properties_box.cc b/gtk2_ardour/audio_trigger_properties_box.cc
index 83fdd4687b..5b56f4ecd6 100644
--- a/gtk2_ardour/audio_trigger_properties_box.cc
+++ b/gtk2_ardour/audio_trigger_properties_box.cc
@@ -128,7 +128,7 @@ AudioTriggerPropertiesBox::AudioTriggerPropertiesBox ()
 	_table.set_spacings (4);
 	_table.set_border_width (2);
 
-	attach (*eTempoBox,    0,1, 0,1, Gtk::FILL, Gtk::SHRINK);
+	attach (*eTempoBox,    0,1, 0,1, Gtk::FILL, Gtk::EXPAND | Gtk::FILL);
 #if 0
 	attach (_table,        0,1, 1,2, Gtk::FILL, Gtk::SHRINK);
 #endif
diff --git a/gtk2_ardour/trigger_page.cc b/gtk2_ardour/trigger_page.cc
index b068d9359f..6409c43211 100644
--- a/gtk2_ardour/trigger_page.cc
+++ b/gtk2_ardour/trigger_page.cc
@@ -142,10 +142,10 @@ TriggerPage::TriggerPage ()
 	table->set_border_width (8);
 
 	int col = 0;
-	table->attach (_slot_prop_box, col, col + 1, 0, 1, Gtk::FILL, Gtk::SHRINK);
+	table->attach (_slot_prop_box, col, col + 1, 0, 1, Gtk::FILL, Gtk::SHRINK | Gtk::FILL);
 
 	col = 1;
-	table->attach (_audio_trig_box, col, col + 1, 0, 1, Gtk::FILL, Gtk::SHRINK);
+	table->attach (_audio_trig_box, col, col + 1, 0, 1, Gtk::FILL, Gtk::SHRINK | Gtk::FILL);
 	++col;
 
 #ifdef MIDI_PROPERTIES_BOX_IMPLEMENTED