diff --git a/src/sysprof/sysprof-window.c b/src/sysprof/sysprof-window.c
index 9440fde4..04a44fb5 100644
--- a/src/sysprof/sysprof-window.c
+++ b/src/sysprof/sysprof-window.c
@@ -23,14 +23,13 @@
 #include "config.h"
 
 #include <glib/gi18n.h>
-#include <dazzle.h>
 #include <sysprof-ui.h>
 
 #include "sysprof-window.h"
 
 struct _SysprofWindow
 {
-  GtkApplicationWindow  parent_instance;
+  DzlApplicationWindow  parent_instance;
 
   DzlBindingGroup      *bindings;
 
@@ -38,7 +37,7 @@ struct _SysprofWindow
   GtkMenuButton        *menu_button;
 };
 
-G_DEFINE_TYPE (SysprofWindow, sysprof_window, GTK_TYPE_APPLICATION_WINDOW)
+G_DEFINE_TYPE (SysprofWindow, sysprof_window, DZL_TYPE_APPLICATION_WINDOW)
 
 /**
  * sysprof_window_new:
diff --git a/src/sysprof/sysprof-window.h b/src/sysprof/sysprof-window.h
index 1b88aeaa..dacfb56e 100644
--- a/src/sysprof/sysprof-window.h
+++ b/src/sysprof/sysprof-window.h
@@ -20,7 +20,7 @@
 
 #pragma once
 
-#include <gtk/gtk.h>
+#include <dazzle.h>
 
 #include "sysprof-application.h"
 
@@ -28,7 +28,7 @@ G_BEGIN_DECLS
 
 #define SYSPROF_TYPE_WINDOW (sysprof_window_get_type())
 
-G_DECLARE_FINAL_TYPE (SysprofWindow, sysprof_window, SYSPROF, WINDOW, GtkApplicationWindow)
+G_DECLARE_FINAL_TYPE (SysprofWindow, sysprof_window, SYSPROF, WINDOW, DzlApplicationWindow)
 
 GtkWidget *sysprof_window_new              (SysprofApplication *application);
 void       sysprof_window_new_tab          (SysprofWindow      *self);
diff --git a/src/sysprof/ui/sysprof-window.ui b/src/sysprof/ui/sysprof-window.ui
index a1c8b7b8..f6d891c6 100644
--- a/src/sysprof/ui/sysprof-window.ui
+++ b/src/sysprof/ui/sysprof-window.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <interface>
-  <template class="SysprofWindow" parent="GtkApplicationWindow">
+  <template class="SysprofWindow" parent="DzlApplicationWindow">
     <property name="default-height">700</property>
     <property name="default-width">1200</property>
     <property name="icon-name">org.gnome.Sysprof-symbolic</property>