diff --git a/tests/gtk/test_window.py b/tests/gtk/test_window.py
index 2b16813..3d1d234 100644
--- a/tests/gtk/test_window.py
+++ b/tests/gtk/test_window.py
@@ -16,8 +16,8 @@ class TestWindow(unittest.TestCase):
     def test_init(self):
         """Check that the Window is set up correctly."""
         self.assertIsInstance(self.window, Adw.Window)
-        self.assertEqual(self.window.props.default_height, 800)
-        self.assertEqual(self.window.props.default_width, 1200)
+        self.assertEqual(self.window.props.default_height, 1000)
+        self.assertEqual(self.window.props.default_width, 1600)
         self.assertTrue(self.window.has_css_class("devel"))
 
         self.assertIsInstance(self.window.props.content, Gtk.Box)
diff --git a/xfstestsdb/gtk/window.py b/xfstestsdb/gtk/window.py
index aeceb1b..fd06acd 100644
--- a/xfstestsdb/gtk/window.py
+++ b/xfstestsdb/gtk/window.py
@@ -16,7 +16,7 @@ class Window(Adw.Window):
 
     def __init__(self, **kwargs):
         """Set up our Window."""
-        super().__init__(default_height=800, default_width=1200,
+        super().__init__(default_height=1000, default_width=1600,
                          content=Gtk.Box(orientation=Gtk.Orientation.VERTICAL),
                          title=Adw.WindowTitle(title="xfstestsdb gtk"),
                          headerbar=Adw.HeaderBar(), **kwargs)