diff --git a/comms/rxtx/Makefile b/comms/rxtx/Makefile
index 618fe68f314c..9a2206bdbcf6 100644
--- a/comms/rxtx/Makefile
+++ b/comms/rxtx/Makefile
@@ -1,35 +1,35 @@
 # Created by: Jean-Baptiste Quenot <jb.quenot@caraldi.com>
 # $FreeBSD$
 
 PORTNAME=	rxtx
 PORTVERSION=	2.2p2
 PORTREVISION=	4
 CATEGORIES=	comms java
 MASTER_SITES=	http://rxtx.qbang.org/pub/rxtx/
 PKGNAMESUFFIX=	-${JAVA_PORT:S/java\///}
 DISTNAME=	${PORTNAME}-${PORTVERSION:S/p/pre/}
 
 MAINTAINER=	james@elstone.net
 COMMENT=	Native interface to serial ports in Java
 
 LICENSE=	LGPL21
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 NOT_FOR_ARCHS=		mips mips64
 NOT_FOR_ARCHS_REASON=	Java not available for this architecture
 
 USES=		gmake libtool zip
 
 USE_JAVA=	yes
 JAVA_OS=	native
 GNU_CONFIGURE=	yes
 CONFIGURE_ENV=	JAVA_HOME=${JAVA_HOME}
 INSTALL_TARGET=	install-strip
 
 USE_LDCONFIG=	yes
 MAKE_JOBS_UNSAFE=	yes
 
 PLIST_SUB=	JAVA_HOME=${JAVA_HOME:S,^${PREFIX}/,,}
-PLIST_SUB+=	ARCH=${ARCH:C/armv.*/arm/:C/powerpc64.*/ppc64/}
+PLIST_SUB+=	ARCH=${ARCH:C/armv.*/arm/:S/powerpc64/ppc64/}
 
 .include <bsd.port.mk>