diff --git a/emmental/window.py b/emmental/window.py
index 311a49a..741f301 100644
--- a/emmental/window.py
+++ b/emmental/window.py
@@ -39,7 +39,8 @@ class Window(Adw.Window):
     def __init__(self, version: str, **kwargs):
         """Initialize our Window."""
         super().__init__(icon_name="emmental", title=version,
-                         default_width=1600, default_height=900, **kwargs)
+                         default_width=1600, default_height=900,
+                         width_request=525, height_request=500, **kwargs)
         self._box = Gtk.Box.new(Gtk.Orientation.VERTICAL, 0)
         self._header = Adw.Bin(child=self.header)
         self._inner_pane = _make_pane(Gtk.Orientation.VERTICAL,
diff --git a/tests/test_window.py b/tests/test_window.py
index 71d07c0..eb5f70b 100644
--- a/tests/test_window.py
+++ b/tests/test_window.py
@@ -31,6 +31,9 @@ class TestWindow(unittest.TestCase):
         self.assertEqual(self.window.get_title(), "Test 1.2.3")
         self.assertEqual(self.window.get_default_size(), (1600, 900))
 
+        self.assertEqual(self.window.props.width_request, 525)
+        self.assertEqual(self.window.props.height_request, 500)
+
     def test_content(self):
         """Check that the Window content is set up properly."""
         self.assertEqual(self.window._box.get_orientation(),