diff --git a/sbin/rcorder/rcorder.8 b/sbin/rcorder/rcorder.8
index b17b0a337ca1..16cf117c8508 100644
--- a/sbin/rcorder/rcorder.8
+++ b/sbin/rcorder/rcorder.8
@@ -89,6 +89,12 @@ and
 lines may appear, but all such lines must appear in a sequence without
 any intervening lines, as once a line that does not follow the format
 is reached, parsing stops.
+Note that for historical reasons,
+.Dq Li REQUIRES ,
+.Dq Li PROVIDES ,
+and
+.Dq Li KEYWORDS
+are also accepted in addition to the above.
 .Pp
 The options are as follows:
 .Bl -tag -width indent