diff --git a/playerctl_gui.py b/playerctl_gui.py
index 2d275c2..02c3aa5 100644
--- a/playerctl_gui.py
+++ b/playerctl_gui.py
@@ -26,14 +26,20 @@ class PlayerctlApp(Gtk.Application):
         window.set_border_width(12)
         window.set_default_size(320, 120)
 
-        controls = Gtk.Box(spacing=6)
-        controls.set_orientation(Gtk.Orientation.HORIZONTAL)
+        controls = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, spacing=6)
+        controls.set_homogeneous(True)
+        controls.set_hexpand(True)
+        controls.set_vexpand(True)
+        controls.set_valign(Gtk.Align.FILL)
 
         prev_button = Gtk.Button.new_from_icon_name(
             "media-skip-backward",
             Gtk.IconSize.LARGE_TOOLBAR,
         )
         prev_button.connect("clicked", self._on_prev_clicked)
+        prev_button.set_hexpand(True)
+        prev_button.set_vexpand(True)
+        prev_button.set_valign(Gtk.Align.FILL)
         controls.pack_start(prev_button, True, True, 0)
 
         toggle_button = Gtk.Button.new_from_icon_name(
@@ -41,6 +47,9 @@ class PlayerctlApp(Gtk.Application):
             Gtk.IconSize.LARGE_TOOLBAR,
         )
         toggle_button.connect("clicked", self._on_toggle_clicked)
+        toggle_button.set_hexpand(True)
+        toggle_button.set_vexpand(True)
+        toggle_button.set_valign(Gtk.Align.FILL)
         controls.pack_start(toggle_button, True, True, 0)
 
         next_button = Gtk.Button.new_from_icon_name(
@@ -48,10 +57,13 @@ class PlayerctlApp(Gtk.Application):
             Gtk.IconSize.LARGE_TOOLBAR,
         )
         next_button.connect("clicked", self._on_next_clicked)
+        next_button.set_hexpand(True)
+        next_button.set_vexpand(True)
+        next_button.set_valign(Gtk.Align.FILL)
         controls.pack_start(next_button, True, True, 0)
 
         layout = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=12)
-        layout.pack_start(controls, False, False, 0)
+        layout.pack_start(controls, True, True, 0)
 
         window.add(layout)
         window.show_all()