diff --git a/share/man/man5/rc.conf.5 b/share/man/man5/rc.conf.5
index 008b288a4e..67dc8921f0 100644
--- a/share/man/man5/rc.conf.5
+++ b/share/man/man5/rc.conf.5
@@ -2563,10 +2563,15 @@ They default to an empty string if not set, except for logfile which defaults to
 if it is not set.
 .Pp
 Note that in case
-.Va vkernel_memimg
-is not specified, the rc.d script will create directory
-.Pa /var/vkernel
-, which is the default one, and set permissions to 1777 for all users to be able to create memory images there.
+.Va vkernel_<name>_memimg
+is not set, the
+.Pa rc.d
+script will create
+.Pa /var/vkernel ,
+which is the vkernel's default directory for memory images,
+with permissions of 1777, i.e. world writable with the sticky bit set
+(see
+.Xr sticky 8 ) .
 .It Va autofs_enable
 .Pq Vt bool
 If set to