diff --git a/editor/editor_audio_buses.cpp b/editor/editor_audio_buses.cpp
index c57d65d321f..0b395402738 100644
--- a/editor/editor_audio_buses.cpp
+++ b/editor/editor_audio_buses.cpp
@@ -719,6 +719,7 @@ EditorAudioBus::EditorAudioBus(EditorAudioBuses *p_buses, bool p_is_master) {
 	effects->set_hide_root(true);
 	effects->set_custom_minimum_size(Size2(0, 100) * EDSCALE);
 	effects->set_hide_folding(true);
+	effects->set_v_size_flags(SIZE_EXPAND_FILL);
 	vb->add_child(effects);
 	effects->connect("item_edited", this, "_effect_edited");
 	effects->connect("cell_selected", this, "_effect_selected");
@@ -1151,6 +1152,7 @@ EditorAudioBuses::EditorAudioBuses() {
 	bus_scroll->set_enable_v_scroll(false);
 	add_child(bus_scroll);
 	bus_hb = memnew(HBoxContainer);
+	bus_hb->set_v_size_flags(SIZE_EXPAND_FILL);
 	bus_scroll->add_child(bus_hb);
 
 	save_timer = memnew(Timer);