diff --git a/share/man/man4/tcp.4 b/share/man/man4/tcp.4
index e2f7021685b5..6d1e31f2297d 100644
--- a/share/man/man4/tcp.4
+++ b/share/man/man4/tcp.4
@@ -226,6 +226,9 @@ See
 .Xr blackhole 4 .
 .It tcp.delayed_ack
 Delay ACK to try and piggyback it onto a data packet.
+.It tcp.newreno
+Enable TCP NewReno Fast Recovery algorithm,
+as described in RFC 2582.
 .It tcp.path_mtu_discovery
 Enable Path MTU Discovery
 .El