diff --git a/panels/notifications/cc-app-notifications-dialog.c b/panels/notifications/cc-app-notifications-dialog.c
index 4d8ffddb9..c7850f321 100644
--- a/panels/notifications/cc-app-notifications-dialog.c
+++ b/panels/notifications/cc-app-notifications-dialog.c
@@ -49,7 +49,7 @@ static void update_sound_switch (CcAppNotificationsDialog *dialog);
 static void update_notification_switch (CcAppNotificationsDialog *dialog);
 
 struct _CcAppNotificationsDialog {
-  GtkDialog            parent;
+  HdyDialog            parent;
 
   GSettings           *settings;
   GSettings           *master_settings;
@@ -65,7 +65,7 @@ struct _CcAppNotificationsDialog {
   GtkWidget           *lock_screen_content_switch;
 };
 
-G_DEFINE_TYPE (CcAppNotificationsDialog, cc_app_notifications_dialog, GTK_TYPE_DIALOG)
+G_DEFINE_TYPE (CcAppNotificationsDialog, cc_app_notifications_dialog, HDY_TYPE_DIALOG)
 
 static void
 on_perm_store_set_done (GObject *source_object,
diff --git a/panels/notifications/cc-app-notifications-dialog.h b/panels/notifications/cc-app-notifications-dialog.h
index 99b1e3800..3cb1a3b5a 100644
--- a/panels/notifications/cc-app-notifications-dialog.h
+++ b/panels/notifications/cc-app-notifications-dialog.h
@@ -20,11 +20,14 @@
 #pragma once
 
 #include <gtk/gtk.h>
+#define HANDY_USE_UNSTABLE_API
+#include <handy.h>
+#undef HANDY_USE_UNSTABLE_API
 
 G_BEGIN_DECLS
 
 #define CC_TYPE_APP_NOTIFICATIONS_DIALOG (cc_app_notifications_dialog_get_type ())
-G_DECLARE_FINAL_TYPE (CcAppNotificationsDialog, cc_app_notifications_dialog, CC, APP_NOTIFICATIONS_DIALOG, GtkDialog)
+G_DECLARE_FINAL_TYPE (CcAppNotificationsDialog, cc_app_notifications_dialog, CC, APP_NOTIFICATIONS_DIALOG, HdyDialog)
 
 CcAppNotificationsDialog *cc_app_notifications_dialog_new (const gchar          *app_id,
                                                            const gchar          *title,
diff --git a/panels/notifications/cc-app-notifications-dialog.ui b/panels/notifications/cc-app-notifications-dialog.ui
index 95a11a9e7..b3c8f49dc 100644
--- a/panels/notifications/cc-app-notifications-dialog.ui
+++ b/panels/notifications/cc-app-notifications-dialog.ui
@@ -1,9 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <template class="CcAppNotificationsDialog" parent="GtkDialog">
-    <property name="width_request">450</property>
+  <template class="CcAppNotificationsDialog" parent="HdyDialog">
+    <property name="width_request">360</property>
     <property name="can_focus">False</property>
-    <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="type_hint">dialog</property>
     <signal name="response" handler="gtk_widget_destroy" swapped="no"/>