diff --git a/index.html b/index.html
index a949937..a6d62c2 100644
--- a/index.html
+++ b/index.html
@@ -446,8 +446,8 @@ <h3>DataIntegrityProof</h3>
 The `cryptosuite` property of the proof MUST be `bbs-2023`.
           </p>
           <p>
-The value of the `proofValue` property of the proof MUST be an BBS signature or
-BBS proof produced according to [[CFRG-BBS-SIGNATURE]] then serialized and encoded
+The value of the `proofValue` property of the proof MUST be a BBS signature or
+BBS proof produced according to [[CFRG-BBS-SIGNATURE]] that is serialized and encoded
 according to procedures in section <a href="#algorithms"></a>.
           </p>
         </section>