diff --git a/math/gmm++/Makefile b/math/gmm++/Makefile
index 980aa76952b4..ab0a022aa4be 100644
--- a/math/gmm++/Makefile
+++ b/math/gmm++/Makefile
@@ -1,22 +1,23 @@
 PORTNAME=	gmm++
 PORTVERSION=	5.4.2
 CATEGORIES=	math
 MASTER_SITES=	http://download-mirror.savannah.gnu.org/releases/getfem/stable/
 DISTNAME=	${PORTNAME:S/+//g}-${PORTVERSION}
 
 MAINTAINER=	kde@FreeBSD.org
 COMMENT=	Generic matrix template library
 WWW=		https://getfem.org/gmm/
 
 # Note: even though the port's COPYING file mentions gmm++ is licensed under
 # the LGPL version 2.1 with the GCC runtime exception,
 # <http://getfem.org/whatsnew/4.2.html> mentions
 # v4.2 is licensed under the LGPL version 3 with the GCC runtime exception, and
 # so say the headers which are installed.
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 GNU_CONFIGURE=	yes
+NO_ARCH=	yes
 NO_BUILD=	yes
 
 .include <bsd.port.mk>