diff --git a/src/Application.vala b/src/Application.vala
index ea23f48..ccfc177 100644
--- a/src/Application.vala
+++ b/src/Application.vala
@@ -21,7 +21,7 @@ namespace Tooth {
 
 	public static bool start_hidden = false;
 
-	public class Application : Gtk.Application {
+	public class Application : Adw.Application {
 
 		public Dialogs.MainWindow? main_window { get; set; }
 		public Dialogs.NewAccount? add_account_window { get; set; }
diff --git a/src/Dialogs/MainWindow.vala b/src/Dialogs/MainWindow.vala
index b68207f..4c1c066 100644
--- a/src/Dialogs/MainWindow.vala
+++ b/src/Dialogs/MainWindow.vala
@@ -23,7 +23,7 @@ public class Tooth.Dialogs.MainWindow: Adw.ApplicationWindow, Saveable {
 		// button_press_event.connect (on_button_press);
 	}
 
-	public MainWindow (Gtk.Application app) {
+	public MainWindow (Adw.Application app) {
 		Object (
 			application: app,
 			icon_name: Build.DOMAIN,