diff --git a/index.html b/index.html
index 1b2095c..544072e 100644
--- a/index.html
+++ b/index.html
@@ -463,7 +463,7 @@ <h4>createShuffledIdLabelMapFunction</h4>
 For each map entry, <em>entry</em>, in <var>canonicalIdMap</var>:
                   <ol class="algorithm">
                     <li>
-HMAC the canonical identifier from the value in <em>entry</em> to get an HMAC
+Perform an HMAC operation on the canonical identifier from the value in <em>entry</em> to get an HMAC
 digest, <em>digest</em>.
                     </li>
                     <li>