diff --git a/converters/pecl-igbinary/Makefile b/converters/pecl-igbinary/Makefile
index a008161cd662..43c98b61c1bb 100644
--- a/converters/pecl-igbinary/Makefile
+++ b/converters/pecl-igbinary/Makefile
@@ -1,20 +1,26 @@
 PORTNAME=	igbinary
 PORTVERSION=	3.2.16
 CATEGORIES=	converters
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Replacement for the standard PHP serializer
 WWW=		https://pecl.php.net/package/igbinary \
 		https://github.com/igbinary/igbinary
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USES=		php:pecl
 
+.include <bsd.port.pre.mk>
+
 post-patch:
+.if ${PHP_VER} >= 85
+	@${REINPLACE_CMD} -e 's|ext/standard/php_smart_string.h|Zend/zend_smart_string.h|' \
+		${WRKSRC}/src/php7/php_igbinary.h
+.endif
 # Install the real header files
 	@${CP} ${WRKSRC}/src/php7/igbinary.h ${WRKSRC}/igbinary.h
 	@${CP} ${WRKSRC}/src/php7/php_igbinary.h ${WRKSRC}/php_igbinary.h
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>