diff --git a/sbin/sysctl/sysctl.8 b/sbin/sysctl/sysctl.8
index b0a98bcca21a..71f67d6730a4 100644
--- a/sbin/sysctl/sysctl.8
+++ b/sbin/sysctl/sysctl.8
@@ -234,7 +234,6 @@ definitions for fourth level UDP identifiers
 .El
 .Sh SEE ALSO
 .Xr sysctl 3 ,
-.Xr blackhole 4 ,
 .Xr sysctl.conf 5
 .Sh BUGS
 .Nm Sysctl