diff --git a/plug-ins/screenshot/screenshot-freedesktop.c b/plug-ins/screenshot/screenshot-freedesktop.c
index 34e4e27d61..36c06879b5 100644
--- a/plug-ins/screenshot/screenshot-freedesktop.c
+++ b/plug-ins/screenshot/screenshot-freedesktop.c
@@ -144,12 +144,12 @@ screenshot_freedesktop_shoot (GdkMonitor  *monitor,
   if (GDK_IS_X11_DISPLAY (gdk_display_get_default ()))
     {
       GdkWindow *window;
-      guint32   *handle_data;
-      guint32    window_id;
+      Window    *handle_data;
+      Window     window_id;
       gsize      handle_size;
 
-      handle_data = (guint32 *) g_bytes_get_data (handle, &handle_size);
-      g_return_val_if_fail (handle_size == sizeof (guint32), GIMP_PDB_EXECUTION_ERROR);
+      handle_data = (Window *) g_bytes_get_data (handle, &handle_size);
+      g_return_val_if_fail (handle_size == sizeof (Window), GIMP_PDB_EXECUTION_ERROR);
       window_id = *handle_data;
 
       window = gdk_x11_window_foreign_new_for_display (gdk_display_get_default (), window_id);