diff --git a/net/samba420/Makefile b/net/samba420/Makefile
--- a/net/samba420/Makefile
+++ b/net/samba420/Makefile
@@ -1,6 +1,6 @@
 PORTNAME=			${SAMBA4_BASENAME}420
 PORTVERSION=			${SAMBA4_VERSION}
-PORTREVISION=			6
+PORTREVISION=			7
 CATEGORIES?=			net
 MASTER_SITES=			SAMBA/samba/stable SAMBA/samba/rc
 DISTNAME=			${SAMBA4_DISTNAME}
@@ -99,7 +99,7 @@
 				PYTHONHASHSEED=1
 MAKE_ENV=			PYTHONHASHSEED=1
 
-USES=				compiler:c++11-lang iconv localbase:ldflags \
+USES=				bison compiler:c++11-lang iconv localbase:ldflags \
 				perl5 pkgconfig shebangfix waf gettext-runtime
 USE_PERL5=			build
 USE_LDCONFIG=			${SAMBA4_LIBDIR}
@@ -368,7 +368,6 @@
 GPGME_LIB_DEPENDS=		libgpgme.so:security/gpgme
 GPGME_RUN_DEPENDS=		${PYTHON_PKGNAMEPREFIX}gpg>=2.0.0:security/py-gpg@${PY_FLAVOR}
 
-GSSAPI_BUILTIN_USES=		bison
 GSSAPI_BUILTIN_BUILD_DEPENDS=	p5-JSON>=4.0:converters/p5-JSON
 
 GSSAPI_MIT_CONFIGURE_ON=	--with-system-mitkrb5 ${GSSAPIBASEDIR} \