Index: head/cad/tkgate/Makefile
===================================================================
--- head/cad/tkgate/Makefile	(revision 390489)
+++ head/cad/tkgate/Makefile	(revision 390490)
@@ -1,30 +1,30 @@
 # $FreeBSD$
 
 PORTNAME=	tkgate
 PORTVERSION=	2.0.0
 CATEGORIES=	cad
 MASTER_SITES=	http://highsecure.ru/distfiles/ \
 		http://cdn.bitbucket.org/starling13/tkgate/downloads/
 
 MAINTAINER=	vsevolod@FreeBSD.org
 COMMENT=	Event driven digital circuit simulator
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 GNU_CONFIGURE=	yes
-USES+=	tk:build,run
+USES+=	iconv:build,lib tk:build,run
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|/usr/bin/wish|${WISH}|g' ${WRKSRC}/scripts/tree.tcl
 	@${REINPLACE_CMD} -e \
 		's|%%TCL_VER%%|${TCL_VER}|g; \
 		s|%%TCL_INCLUDEDIR%%|${TCL_INCLUDEDIR}|g; \
 		s|%%LOCALBASE%%|${LOCALBASE}|g' \
 		${WRKSRC}/configure
 
 # Remove backup files somehow installed to the stagedir
 post-stage:
 	${FIND} ${STAGEDIR}/${DATADIR} -name '*~' -delete -or -name '*~?' -delete
 
 .include <bsd.port.mk>