Adapt ChangeLog
diff --git a/ChangeLog b/ChangeLog
index 513f24f..7aede8a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,8 @@
      invalidated keys of a lifetime of less than a 1s. Fixes #1968.
    * Fix failure in hmac_drbg in the benchmark sample application, when
      MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
+   * Fix memory leak and freeing without initialization in the example
+     program programs/x509/cert_write. Fixes #1422.
 
 Changes
    * Add tests for session resumption in DTLS.