-#ifdef INTERFACE
-CLASS(XonoticSingleplayerDialog) EXTENDS(XonoticDialog)
+#ifndef DIALOG_SINGLEPLAYER_H
+#define DIALOG_SINGLEPLAYER_H
+#include "dialog.qc"
+CLASS(XonoticSingleplayerDialog, XonoticDialog)
METHOD(XonoticSingleplayerDialog, fill, void(entity))
ATTRIB(XonoticSingleplayerDialog, title, string, _("Singleplayer"))
ATTRIB(XonoticSingleplayerDialog, color, vector, SKINCOLOR_DIALOG_SINGLEPLAYER)