diff --git a/index.html b/index.html
index da0697c..1a5ffe4 100644
--- a/index.html
+++ b/index.html
@@ -290,7 +290,7 @@
             allocation that significantly reduced memory consumption and the
             number of required calculations.
           </p>
-          <hgroup id="buf">
+          <hgroup id="bufpiv">
             <h3>Buf Piv</h3>
             <p>
               <a href="https://gitea.michaelpivato.dev/vato007/bufpiv"