diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index 22e21516acc..cead3a6944c 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -289,7 +289,7 @@ __END_DECLS
  * if you trust the remote host to restrict these ports.
  *
  * The default range of ports and the high range can be changed by
- * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
+ * sysctl(3).  (net.inet.ip.portrange.{hi,low,}{first,last})
  *
  * Changing those values has bad security implications if you are
  * using a stateless firewall that is allowing packets outside of that