diff --git a/Comments:BIP-0039.md b/Comments:BIP-0039.md
index 37bf18f..d4ba785 100644
--- a/Comments:BIP-0039.md
+++ b/Comments:BIP-0039.md
@@ -28,5 +28,5 @@ There are alternative binary-to-word encodings, e.g. PGP word list (a.k.a biomet
 # Inflexibility: entropy of 128, 160, 192, 224, 256 bit length limit is imposed instead of accepting any length (between 128-256).
 --Greg Tonoski, 2023-09-13
 
-# Complexity: SHA-256 calculation may be avoided and separated
+# Complexity: SHA-256 calculation may be avoided and/or separated (optional)
 Are there any benefits of SHA-256-derived checksum requirement? User ends up in the same situation if they input incorrect words - irrespectively of the checksum appended. Typing errors are not prevented. --Greg Tonoski, 2023-09-13
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