diff --git a/net/libnet/Makefile b/net/libnet/Makefile
index 1a8f18f493be..c59bb10e2f4b 100644
--- a/net/libnet/Makefile
+++ b/net/libnet/Makefile
@@ -13,7 +13,10 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		cpe libtool pathfix
 
-CONFIGURE_ARGS=	--disable-doxygen-doc --disable-doxygen-dot --disable-doxygen-html --disable-doxygen-man
+CONFIGURE_ARGS=	--disable-doxygen-doc \
+		--disable-doxygen-dot \
+		--disable-doxygen-html \
+		--disable-doxygen-man
 GNU_CONFIGURE=	yes
 INSTALL_TARGET=	install-strip
 USE_LDCONFIG=	yes