diff --git a/CHANGES.md b/CHANGES.md
index 46a6856ecb..26c56116c4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -24,6 +24,7 @@
   requested at compile time (--enable with-js-error) or at startup (OCAMLRUNPARAM=b=1)
 * Runtime: allow dynlink of precompiled js with separate compilation (#1676)
 * Runtime: reimplement the runtime of weak and ephemeron (#1707)
+* Runtime: don't change the shape of mlbytes when converting to string
 * Lib: Modify Typed_array API for compatibility with WebAssembly
 * Toplevel: no longer set globals for toplevel initialization