diff --git a/src/main.py b/src/main.py
index 07894e4..d060059 100644
--- a/src/main.py
+++ b/src/main.py
@@ -8,7 +8,7 @@
 from gi.repository import GLib, Gio, Gtk, Adw
 
 from .conf import *
-from .window import SpeedtestWindow, SpeedtestPreferencesWindow
+from .window import SpeedtestWindow, SpeedtestPreferencesDialog
 from .gauge import Gauge # This class isn't used there but it the widget needs to be registered
 from .fetch_worker import FetchWorker
 from .test_worker import TestWorker
@@ -63,8 +63,7 @@ def load_backend(self):
         self.fetch_worker.start()
 
     def on_about_action(self, widget, __):
-        about = Adw.AboutWindow(transient_for=self.props.active_window,
-                                application_name=_("Speedtest"),
+        about = Adw.AboutDialog(application_name=_("Speedtest"),
                                 application_icon=APP_ID,
                                 developer_name="Ketok",
                                 version=VERSION,
@@ -75,12 +74,12 @@ def on_about_action(self, widget, __):
         
         about.add_credit_section(_("Backend by"), ["Librespeed"])
 
-        about.present()
+        about.present(self.win)
     
     def on_preferences_action(self, widget, _):
         if self.win.main_view.get_visible_page() == self.win.test_view: # TODO: deactivate this action insead of disabling it
             return
-        SpeedtestPreferencesWindow(self, transient_for=self.props.active_window).present()
+        SpeedtestPreferencesDialog(self).present(self.win)
 
     def on_start_action(self, widget, _):
         self.win.start_test()
diff --git a/src/ui/preferences.blp b/src/ui/preferences.blp
index 2dec367..f57c9e5 100644
--- a/src/ui/preferences.blp
+++ b/src/ui/preferences.blp
@@ -1,10 +1,8 @@
 using Gtk 4.0;
 using Adw 1;
 
-template $SpeedtestPreferencesWindow : Adw.PreferencesWindow {
+template $SpeedtestPreferencesDialog : Adw.PreferencesDialog {
     search-enabled: false;
-    default-width: 360;
-    default-height: 480;
 
     Adw.PreferencesPage {
         Adw.PreferencesGroup {
diff --git a/src/window.py b/src/window.py
index 05e02ea..3efb4c5 100644
--- a/src/window.py
+++ b/src/window.py
@@ -32,8 +32,8 @@ def end_test(self, *_):
             self.on_test_end()
 
 @Gtk.Template(resource_path="/xyz/ketok/Speedtest/ui/preferences.ui")
-class SpeedtestPreferencesWindow(Adw.PreferencesWindow):
-    __gtype_name__ = "SpeedtestPreferencesWindow"
+class SpeedtestPreferencesDialog(Adw.PreferencesDialog):
+    __gtype_name__ = "SpeedtestPreferencesDialog"
 
     theme = Gtk.Template.Child()
     gauge_scale = Gtk.Template.Child()