diff --git a/index.html b/index.html
index afc0173..beace18 100644
--- a/index.html
+++ b/index.html
@@ -106,8 +106,8 @@ <h2>Introduction</h2>
 
 function piStep() {
   var r = 10;
-  var x = Math.random() `*` r `*` 2 - r;
-  var y = Math.random() `*` r `*` 2 - r;
+  var x = Math.random() * r * 2 - r;
+  var y = Math.random() * r * 2 - r;
   return (Math.pow(x, 2) + Math.pow(y, 2) &lt; Math.pow(r, 2))
 }
 function refinePi(deadline) {
@@ -116,7 +116,7 @@ <h2>Introduction</h2>
       pointsInside++;
     pointsTotal++;
   }
-  currentEstimate = (4 `*` pointsInside / pointsTotal);
+  currentEstimate = (4 * pointsInside / pointsTotal);
   textElement = document.getElementById("piEstimate");
   textElement.innerHTML="Pi Estimate: " + currentEstimate;
   requestId = window.requestIdleCallback(refinePi);
@@ -540,7 +540,7 @@ <h2>Acknowledgments</h2>
     this specification: Sami Kyostila, Alex Clarke, Boris Zbarsky, Marcos
     Caceres, Jonas Sicking, Robert O'Callahan, David Baron, Todd Reifsteck,
     Tobin Titus, Elliott Sprehn, Tetsuharu OHZEKI, Lon Ingram, Domenic Denicola,
-    Philippe Le Hegaret and Anne van Kesteren. </p>
+    Philippe Le Hegaret, Anne van Kesteren and Guilherme Siquinelli. </p>
   </section>
 </body>
 </html>