diff --git a/source b/source
index f352df123ec..d19f245ffd9 100644
--- a/source
+++ b/source
@@ -92478,7 +92478,7 @@ location.href = '#foo';</code></pre>
    </li>
 
    <li><p>Let <var>scriptHistoryIndex</var> be the index of <var>step</var> in
-   <var>sessionSteps</var>.</p></li>
+   <var>steps</var>.</p></li>
 
    <li><p>Return (<var>scriptHistoryLength</var>, <var>scriptHistoryIndex</var>).</p></li>
   </ol>