gtk_window_set_title (GTK_WINDOW (self), _("mcen_ti_message_properties"));
folder = tny_header_get_folder (header);
- folder_type = modest_tny_folder_guess_folder_type (folder);
- g_object_unref (folder);
+ if (folder) {
+ folder_type = modest_tny_folder_guess_folder_type (folder);
+ g_object_unref (folder);
+ } else {
+ folder_type = TNY_FOLDER_TYPE_NORMAL;
+ }
g_return_if_fail (folder_type != TNY_FOLDER_TYPE_INVALID);