diff --git a/games/atanks/Makefile b/games/atanks/Makefile
index 09da7c104d48..c53a20469b99 100644
--- a/games/atanks/Makefile
+++ b/games/atanks/Makefile
@@ -1,30 +1,34 @@
 PORTNAME=	atanks
 PORTVERSION=	6.5
 PORTREVISION=	3
 CATEGORIES=	games
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${DISTNAME}/
 
 MAINTAINER=	jessefrgsmith@yahoo.ca
 COMMENT=	2D tank game with large, cartoonish weapons
 WWW=		http://atanks.sourceforge.net/
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	liballeg.so:devel/allegro
 
 USES=		compiler:c++0x gmake
 
 PORTDOCS=	Changelog README README_ru.txt credits.txt
 
 OPTIONS_DEFINE=	DOCS
 
+post-patch:
+	@${REINPLACE_CMD} -e '/"optionitembase\.h"/ { x; s,^,#include\
+		"button.h",; G; }' ${WRKSRC}/src/optionitem.h
+
 post-install:
 	${LN} -sf ../../share/icons/hicolor/48x48/apps/${PORTNAME}.png \
 		${STAGEDIR}${PREFIX}/share/pixmaps/
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${PORTDOCS:S|^|${WRKSRC}/|} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>