diff --git a/devel/simdjson/Makefile b/devel/simdjson/Makefile
index 269d92484b4b..d2b048bf386e 100644
--- a/devel/simdjson/Makefile
+++ b/devel/simdjson/Makefile
@@ -1,20 +1,21 @@
 PORTNAME=	simdjson
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.9.5
 CATEGORIES=	devel
 
 MAINTAINER=	olevole@olevole.ru
 COMMENT=	Parsing gigabytes of JSON per second
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BROKEN_i386=	does not build (error: unknown type name '__uint128_t')
+CXXFLAGS_powerpc64=	-mpower8-vector
 
 USES=		cmake compiler:c++17-lang
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 
 CMAKE_ON=	SIMDJSON_JUST_LIBRARY
 
 .include <bsd.port.mk>
diff --git a/devel/simdjson/files/patch-include_simdjson_ppc64_numberparsing.h b/devel/simdjson/files/patch-include_simdjson_ppc64_numberparsing.h
new file mode 100644
index 000000000000..225292a389e9
--- /dev/null
+++ b/devel/simdjson/files/patch-include_simdjson_ppc64_numberparsing.h
@@ -0,0 +1,20 @@
+--- include/simdjson/ppc64/numberparsing.h.orig	2021-06-13 11:45:59 UTC
++++ include/simdjson/ppc64/numberparsing.h
+@@ -1,7 +1,7 @@
+ #ifndef SIMDJSON_PPC64_NUMBERPARSING_H
+ #define SIMDJSON_PPC64_NUMBERPARSING_H
+ 
+-#include <byteswap.h>
++#include <sys/endian.h>
+ 
+ namespace simdjson {
+ namespace SIMDJSON_IMPLEMENTATION {
+@@ -14,7 +14,7 @@ parse_eight_digits_unrolled(const uint8_t *chars) {
+   uint64_t val;
+   std::memcpy(&val, chars, sizeof(uint64_t));
+ #ifdef __BIG_ENDIAN__
+-  val = bswap_64(val);
++  val = bswap64(val);
+ #endif
+   val = (val & 0x0F0F0F0F0F0F0F0F) * 2561 >> 8;
+   val = (val & 0x00FF00FF00FF00FF) * 6553601 >> 16;