Update to ChangeLog for bug #428
diff --git a/ChangeLog b/ChangeLog
index 07f3b73..61152e9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -46,6 +46,8 @@
      valid version in the trusted certificate list.
    * Fix incorrect handling of block lengths in crypt_and_hash sample program,
      when GCM is used. #441
+   * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
+     enabled unless others were also present. Found by David Fernandez. #428
 
 = mbed TLS 1.3.17 branch 2016-06-28