diff --git a/graphics/png/Makefile b/graphics/png/Makefile
index d429e59d77e9..68b60d9274c5 100644
--- a/graphics/png/Makefile
+++ b/graphics/png/Makefile
@@ -1,51 +1,55 @@
 PORTNAME=	png
 DISTVERSION=	1.6.39
 CATEGORIES=	graphics
 MASTER_SITES=	SF/lib${PORTNAME}/lib${PORTNAME}16/${DISTVERSION}/
 PATCH_SITES=	SF/lib${PORTNAME}-apng/lib${PORTNAME}16/${DISTVERSION}/
 DISTNAME=	lib${PORTNAME}-${DISTVERSION}
 
 MAINTAINER=	desktop@FreeBSD.org
 COMMENT=	Library for manipulating PNG images
 WWW=		http://www.libpng.org/pub/png/libpng.html
 
 LICENSE=	Libpng
 LICENSE_GROUPS=	FSF GPL OSI
 LICENSE_NAME=	libpng License
 LICENSE_FILE=	${WRKSRC}/LICENSE
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 USES=		cmake:testing cpe pathfix tar:xz
 CPE_PRODUCT=	libpng
 USE_LDCONFIG=	yes
 
 CMAKE_OFF=	PNG_TESTS
 CMAKE_TESTING_ON=	PNG_TESTS
 
 OPTIONS_DEFINE=	APNG SIMD
 OPTIONS_DEFAULT=APNG
 OPTIONS_DEFAULT_aarch64=	SIMD
 OPTIONS_DEFAULT_amd64=	SIMD
 OPTIONS_DEFAULT_powerpc64le=	SIMD
 # arm/arm_init.c:43:6: error: "No support for run-time ARM Neon checking; use compile-time options"
 .ifdef QEMU_EMULATING
 OPTIONS_EXCLUDE_armv6=	SIMD
 OPTIONS_EXCLUDE_armv7=	SIMD
 .endif
 
 APNG_DESC=Enable Animated PNG support
 
 SIMD_CMAKE_BOOL=	PNG_HARDWARE_OPTIMIZATIONS
 
 .include <bsd.port.options.mk>
 
 .if ${ARCH} == powerpc64 && ${PORT_OPTIONS:MSIMD}
 USES+=		compiler:c11
 CFLAGS+=	-maltivec -mvsx
 .endif
 
 .if ${PORT_OPTIONS:MAPNG} || make(makesum)
 PATCHFILES=	${DISTNAME}-apng.patch.gz:-p1
 .endif
 
+post-patch:
+	@${REINPLACE_CMD} -e 's|CMAKE_DEBUG_POSTFIX "d"|CMAKE_DEBUG_POSTFIX ""|g' \
+		${PATCH_WRKSRC}/CMakeLists.txt
+
 .include <bsd.port.mk>