diff --git a/Mk/bsd.port.mk b/Mk/bsd.port.mk
--- a/Mk/bsd.port.mk
+++ b/Mk/bsd.port.mk
@@ -1545,6 +1545,12 @@
 ${v}=	flavor "${FLAVOR}" ${${FLAVOR}_${v}}
 .endif
 .endfor
+.if defined(FLAVORS_SUB)
+PLIST_SUB+=	${FLAVORS:N${FLAVOR}:@v@${v:tu}="\@comment " NO_${v:tu}=""@}
+PLIST_SUB+=	${FLAVOR:tu}="" NO_${FLAVOR:tu}="@comment "
+SUB_LIST+=	${FLAVORS:N${FLAVOR}:@v@${v:tu}="\@comment " NO_${v:tu}=""@}
+SUB_LIST+=	${FLAVOR:tu}="" NO_${FLAVOR:tu}="@comment "
+.endif
 .endif # defined(${FLAVOR})