diff --git a/graphics/vulkan-validation-layers/Makefile b/graphics/vulkan-validation-layers/Makefile
index 9c8172093b52..88fb3f14aba2 100644
--- a/graphics/vulkan-validation-layers/Makefile
+++ b/graphics/vulkan-validation-layers/Makefile
@@ -1,44 +1,43 @@
 PORTNAME=	vulkan-validation-layers
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.3.232
 CATEGORIES=	graphics
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Validation layers for the Vulkan graphics API
 WWW=		https://github.com/KhronosGroup/Vulkan-ValidationLayers
 
 LICENSE=	APACHE20
 
 BUILD_DEPENDS=	robin-hood-hashing>0:devel/robin-hood-hashing \
 		spirv-tools>0:graphics/spirv-tools \
 		vulkan-headers>0:graphics/vulkan-headers
 
 USES=		alias 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-187-g85a1ed2:headers/external/spirv-headers
 CMAKE_OFF=	BUILD_TESTS
 CMAKE_ON=	BUILD_LAYER_SUPPORT_FILES
 CMAKE_ARGS=	-DSPIRV_HEADERS_INSTALL_DIR:PATH="${WRKSRC_headers}" \
 		-DVULKAN_HEADERS_INSTALL_DIR:PATH="${LOCALBASE}"
-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>