Index: head/devel/cproto/Makefile
===================================================================
--- head/devel/cproto/Makefile	(revision 430896)
+++ head/devel/cproto/Makefile	(revision 430897)
@@ -1,17 +1,17 @@
 # Created by: Abel Chow <abel_chow@yahoo.com>
 # $FreeBSD$
 
 PORTNAME=	cproto
 PORTVERSION=	4.7k
 CATEGORIES=	devel
 MASTER_SITES=	ftp://invisible-island.net/cproto/
-EXTRACT_SUFX=	.tgz
 
 MAINTAINER=	thomas@bsdunix.ch
 COMMENT=	Generate C function prototypes and convert function definitions
 
 GNU_CONFIGURE=	yes
+USES=		tar:tgz
 
 PLIST_FILES=	bin/cproto man/man1/cproto.1.gz
 
 .include <bsd.port.mk>