diff --git a/graphics/vulkan-validation-layers/Makefile b/graphics/vulkan-validation-layers/Makefile
index 27d2fc4c983b..423bb9b3ff2e 100644
--- a/graphics/vulkan-validation-layers/Makefile
+++ b/graphics/vulkan-validation-layers/Makefile
@@ -1,44 +1,46 @@
 # $FreeBSD$
 
 PORTNAME=	vulkan-validation-layers
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.2.172
+PORTREVISION=	1
 CATEGORIES=	graphics
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Validation layers for the Vulkan graphics API
 
 LICENSE=	APACHE20
 
 BUILD_DEPENDS=	glslang>0:graphics/glslang \
 		spirv-tools>0:graphics/spirv-tools \
 		vulkan-headers>0:graphics/vulkan-headers
 
 USES=		cmake compiler:c++11-lib pkgconfig python:3.4+,build
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 GH_ACCOUNT=	KhronosGroup
 GH_PROJECT=	Vulkan-ValidationLayers
 GH_TUPLE=	KhronosGroup:SPIRV-Headers:1.5.4.raytracing.fixed-29-g75b30a6:headers/external/spirv-headers
 CMAKE_OFF=	BUILD_TESTS
 CMAKE_ON=	BUILD_LAYER_SUPPORT_FILES
 CMAKE_ARGS=	-DGLSLANG_INSTALL_DIR:PATH="${LOCALBASE}" \
 		-DSPIRV_HEADERS_INSTALL_DIR:PATH="${WRKSRC_headers}"
+CFLAGS+=	${WITH_DEBUG:U-DNDEBUG}
 
 OPTIONS_DEFINE=	WAYLAND XCB XLIB
 OPTIONS_DEFAULT=WAYLAND XCB XLIB
 
 WAYLAND_LIB_DEPENDS=	libwayland-egl.so:graphics/wayland
 WAYLAND_CMAKE_BOOL=	BUILD_WSI_WAYLAND_SUPPORT
 
 XCB_DESC=		${X11_DESC} via libxcb
 XCB_USES=		xorg
 XCB_USE=		XORG=xcb
 XCB_CMAKE_BOOL=		BUILD_WSI_XCB_SUPPORT
 
 XLIB_DESC=		${X11_DESC} via libX11
 XLIB_USES=		xorg
 XLIB_USE=		XORG=x11,xrandr
 XLIB_CMAKE_BOOL=	BUILD_WSI_XLIB_SUPPORT
 
 .include <bsd.port.mk>