diff --git a/converters/p5-Sereal-Decoder/Makefile b/converters/p5-Sereal-Decoder/Makefile
index 8853f0a5a0d2..f1e930c7f3c7 100644
--- a/converters/p5-Sereal-Decoder/Makefile
+++ b/converters/p5-Sereal-Decoder/Makefile
@@ -1,32 +1,33 @@
 PORTNAME=	Sereal-Decoder
 PORTVERSION=	5.003
 CATEGORIES=	converters perl5
 MASTER_SITES=	CPAN
 MASTER_SITE_SUBDIR=	CPAN:YVES
 PKGNAMEPREFIX=	p5-
 
 MAINTAINER=	perl@FreeBSD.org
 COMMENT=	Perl module for fast, powerful binary deserialization (decoder)
 WWW=		https://metacpan.org/pod/Sereal::Decoder
 
 LICENSE=	ART10 GPLv1+
 LICENSE_COMB=	dual
 
 LIB_DEPENDS=	libzstd.so:archivers/zstd
 TEST_DEPENDS=	p5-Test-Deep>=0:devel/p5-Test-Deep \
 		p5-Test-Differences>=0,1:devel/p5-Test-Differences \
 		p5-Test-LongString>=0:devel/p5-Test-LongString \
 		p5-Test-Warn>=0:devel/p5-Test-Warn
 
 USES=		perl5
 USE_PERL5=	configure
 
+CONFIGURE_ENV=	NO_ASM=no USE_UNALIGNED=no
 MAKE_ENV=	PASTHRU_DEFINE="-I${LOCALBASE}/include"
 MAKE_JOBS_UNSAFE=	yes
 
 PORTSCOUT=	limit:^[0-9\.]*$$
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${SITE_ARCH_REL}/auto/Sereal/Decoder/Decoder.so
 
 .include <bsd.port.mk>
diff --git a/converters/p5-Sereal-Encoder/Makefile b/converters/p5-Sereal-Encoder/Makefile
index 16b1772cacbf..56294d3637d8 100644
--- a/converters/p5-Sereal-Encoder/Makefile
+++ b/converters/p5-Sereal-Encoder/Makefile
@@ -1,33 +1,34 @@
 PORTNAME=	Sereal-Encoder
 PORTVERSION=	5.003
 CATEGORIES=	converters perl5
 MASTER_SITES=	CPAN
 MASTER_SITE_SUBDIR=	CPAN:YVES
 PKGNAMEPREFIX=	p5-
 
 MAINTAINER=	perl@FreeBSD.org
 COMMENT=	Perl module for fast, powerful binary serialization (encoder)
 WWW=		https://metacpan.org/pod/Sereal::Encoder
 
 LICENSE=	ART10 GPLv1+
 LICENSE_COMB=	dual
 
 LIB_DEPENDS=	libzstd.so:archivers/zstd
 TEST_DEPENDS=	p5-Sereal-Decoder>=5.000:converters/p5-Sereal-Decoder \
 		p5-Test-Deep>=0:devel/p5-Test-Deep \
 		p5-Test-Differences>=0,1:devel/p5-Test-Differences \
 		p5-Test-LongString>=0:devel/p5-Test-LongString \
 		p5-Test-Warn>=0:devel/p5-Test-Warn
 
 USES=		perl5
 USE_PERL5=	configure
 
+CONFIGURE_ENV=	NO_ASM=no USE_UNALIGNED=no
 MAKE_ENV=	PASTHRU_DEFINE="-I${LOCALBASE}/include"
 MAKE_JOBS_UNSAFE=	yes
 
 PORTSCOUT=	limit:^[0-9\.]*$$
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${SITE_ARCH_REL}/auto/Sereal/Encoder/Encoder.so
 
 .include <bsd.port.mk>