diff --git a/ChangeLog b/ChangeLog
index f53530d..05e3f9d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -20,6 +20,9 @@
    * Fix documentation and implementation missmatch for function arguments of
      mbedtls_gcm_finish(). Found by cmiatpaar. #602
    * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
+   * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
+     data structure until after error checks are successful. Found by
+     subramanyam-c.
 
 = mbed TLS 1.3.17 branch 2016-06-28