diff --git a/docs/engine.html b/docs/engine.html
index d56f3a59d..4d443bc99 100644
--- a/docs/engine.html
+++ b/docs/engine.html
@@ -298,7 +298,7 @@
 <p>This feature can be turned off.</p>
 
 <p>The options for specifying how to pad parenthesises are:</p>
-<a name="parenPad"></a>
+<a name="parenpad"></a>
 <table border="1" summary="parenthesises padding options">
   <tr class="header">
     <td>Option</td>