diff --git a/index.html b/index.html
index 3ca5e21..be9d9fc 100644
--- a/index.html
+++ b/index.html
@@ -581,7 +581,7 @@ <h3>Integrity Validation</h3>
             be annotated with integrity information by adding the `digestSRI` property to the `credentialSchema` value
             in the Verifiable Credential which contains the schema, using the method specified in
             <a data-cite="sri/#integrity-metadata">Subresource Integrity</a>.
-            Validation of the integrity of the schema MUST be done before evaluation.
+            It is RECOMMENDED that validation of the integrity of the schema be done before evaluation.
           </p>
         <p>
           An example of such usage is provided below: