diff --git a/graphics/ttyplot/Makefile b/graphics/ttyplot/Makefile
index 81d81e61764e..7a9bbce083d4 100644
--- a/graphics/ttyplot/Makefile
+++ b/graphics/ttyplot/Makefile
@@ -1,23 +1,25 @@
 PORTNAME=	ttyplot
 DISTVERSION=	1.7.0
 CATEGORIES=	graphics
 
 MAINTAINER=	0mp@FreeBSD.org
 COMMENT=	Realtime plotting utility for TTY with data input from stdin
 WWW=		https://github.com/tenox7/ttyplot
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_FreeBSD_13=	fails to build: Package 'ncursesw' not found
+
 USES=		ncurses pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	tenox7
 
 MAKE_ARGS=	CFLAGS="${CFLAGS}" MANPREFIX="${PREFIX}/share/man"
 
 PLIST_FILES=	bin/${PORTNAME} share/man/man1/ttyplot.1.gz
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/ttyplot
 
 .include <bsd.port.mk>