diff --git a/ChangeLog b/ChangeLog
index 66ecf97..ef26674 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -47,6 +47,8 @@
    * Fix private key DER output in the key_app_writer example. File contents
      were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
      Christian Walther in #2239.
+   * Fix incorrect default port number in ssl_mail_client example's usage.
+     Found and fixed by irwir. #2337
 
 Changes
    * Include configuration file in all header files that use configuration,