diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 0b5c1f27b..fc6f7c252 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -20,6 +20,7 @@ Bug fixes::
   * core: fix memory leak when config version is invalid or not supported
   * core: fix crash when "config_version" is present in a configuration file without a value
   * core: display an error on startup if environment variable "HOME" is not set
+  * irc: fix target buffer of IRC message 337 (whois reply: "is hiding their idle time")
   * relay: close properly connection with the IRC client in case of server disconnection (issue #2038)
   * ruby: fix use of NULL variable when displaying exception
 
diff --git a/src/plugins/irc/irc-protocol.c b/src/plugins/irc/irc-protocol.c
index f1222aee8..c104d0db5 100644
--- a/src/plugins/irc/irc-protocol.c
+++ b/src/plugins/irc/irc-protocol.c
@@ -7844,7 +7844,8 @@ irc_protocol_recv_command (struct t_irc_server *server,
         IRCB(331, 1, 0, 331),            /* no topic for channel            */
         IRCB(332, 0, 1, 332),            /* topic of channel                */
         IRCB(333, 1, 0, 333),            /* topic info (nick/date)          */
-        IRCB(335, 1, 0, whois_nick_msg), /* is a bot on                     */
+        IRCB(335, 1, 0, whois_nick_msg), /* whois (is a bot on)             */
+        IRCB(337, 1, 0, whois_nick_msg), /* whois (is hiding idle time)     */
         IRCB(338, 1, 0, 338),            /* whois (host)                    */
         IRCB(341, 1, 0, 341),            /* inviting                        */
         IRCB(343, 1, 0, 330_343),        /* is opered as                    */