Index: head/math/clarence/Makefile
===================================================================
--- head/math/clarence/Makefile	(revision 455540)
+++ head/math/clarence/Makefile	(revision 455541)
@@ -1,26 +1,26 @@
 # Created by: ijliao
 # $FreeBSD$
 
 PORTNAME=	clarence
 PORTVERSION=	0.4.4
 PORTREVISION=	8
 CATEGORIES=	math python
 MASTER_SITES=	http://www.sourcefiles.org/Productivity_Tools/Calculators/ \
 		ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/sunsite.unc-mirror/distributions/sourcemage/grimoire/fallback/fallback/
 
 MAINTAINER=	psh@iki.fi
 COMMENT=	Programmer's calculator
 
-USES=		python shebangfix
+USES=		python:2.7 shebangfix
 USE_GNOME=	pygtk2
 NO_BUILD=	yes
 
 PLIST_FILES=	bin/clarence man/man1/clarence.1.gz
 SHEBANG_FILES=	clarence.py
 
 do-install:
 	${INSTALL_SCRIPT} ${WRKSRC}/clarence.py \
 		${STAGEDIR}${PREFIX}/bin/clarence
 	${INSTALL_MAN} ${WRKSRC}/${PORTNAME}.1 ${STAGEDIR}${MANPREFIX}/man/man1
 
 .include <bsd.port.mk>