diff --git a/lib/libc/sys/send.2 b/lib/libc/sys/send.2
index a68936f5c4f0..1920059f3b12 100644
--- a/lib/libc/sys/send.2
+++ b/lib/libc/sys/send.2
@@ -172,6 +172,10 @@ This generally indicates that the interface has stopped sending,
 but may be caused by transient congestion.
 .It Bq Er EHOSTUNREACH
 The remote host was unreachable.
+.It Bq Er ECONNREFUSED
+The socket received an ICMP destination unreachable message
+from the last message sent.  This typically means that the
+receiver is not listening on the remote port.
 .It Bq Er EHOSTDOWN
 The remote host was down.
 .El