diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index c2deaadd6e6..181bd351b46 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -1253,7 +1253,6 @@ options 	MAC
 options 	MAC_BIBA
 options 	MAC_BSDEXTENDED
 options 	MAC_DDB
-options 	MAC_DO
 options 	MAC_IFOFF
 options 	MAC_IPACL
 options 	MAC_LOMAC