diff --git a/ChangeLog b/ChangeLog
index 9ab0c03..6a3fed1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -17,7 +17,8 @@
      Junhwan Park, #2106.
    * Reduce stack usage of hkdf tests. Fixes #2195.
    * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
-     used with negative inputs. Found by Guido Vranken in #2404.
+     used with negative inputs. Found by Guido Vranken in #2404. Credit to
+     OSS-Fuzz.
    * Fix bugs in the AEAD test suite which would be exposed by ciphers which
      either used both encrypt and decrypt key schedules, or which perform padding.
      GCM and CCM were not affected. Fixed by Jack Lloyd.