diff --git a/ChangeLog.d/some-max-size-macro-are-too-small-when-psa-ecc-is-accelerated.txt b/ChangeLog.d/some-max-size-macro-are-too-small-when-psa-ecc-is-accelerated.txt
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+++ b/ChangeLog.d/some-max-size-macro-are-too-small-when-psa-ecc-is-accelerated.txt
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+Bugfix
+   * Fix proper sizing for PSA_EXPORT_[KEY_PAIR/PUBLIC_KEY]_MAX_SIZE and
+     PSA_SIGNATURE_MAX_SIZE buffers when at least one accelerated EC is bigger
+     than all built-in ones and RSA is disabled.
+     Resolves #6622.
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