diff --git a/doc/api/http.md b/doc/api/http.md
index fad0e87e9ca..0b5e75aeabe 100644
--- a/doc/api/http.md
+++ b/doc/api/http.md
@@ -577,8 +577,8 @@ a listener for the `'listening'` event.  See also [`net.Server.listen(path)`][].
 
 Begin accepting connections on the specified `port` and `hostname`. If the
 `hostname` is omitted, the server will accept connections on any IPv6 address
-(`::`) when IPv6 is available, or any IPv4 address (`0.0.0.0`) otherwise. A
-port value of zero will assign a random port.
+(`::`) when IPv6 is available, or any IPv4 address (`0.0.0.0`) otherwise. Use a
+port value of zero to have the operating system assign an available port.
 
 To listen to a unix socket, supply a filename instead of port and hostname.
 
diff --git a/doc/api/net.md b/doc/api/net.md
index 5bd3a23722f..674478e73d0 100644
--- a/doc/api/net.md
+++ b/doc/api/net.md
@@ -218,8 +218,8 @@ added: v0.1.90
 
 Begin accepting connections on the specified `port` and `hostname`. If the
 `hostname` is omitted, the server will accept connections on any IPv6 address
-(`::`) when IPv6 is available, or any IPv4 address (`0.0.0.0`) otherwise. A
-port value of zero will assign a random port.
+(`::`) when IPv6 is available, or any IPv4 address (`0.0.0.0`) otherwise. Use a
+port value of `0` to have the operating system assign an available port.
 
 Backlog is the maximum length of the queue of pending connections.
 The actual length will be determined by the OS through sysctl settings such as