diff --git a/themes/asf/index.html.xslt b/themes/asf/index.html.xslt
index d420fd8..b16a34c 100644
--- a/themes/asf/index.html.xslt
+++ b/themes/asf/index.html.xslt
@@ -19,7 +19,9 @@
             title="{atom:title}" type="{atom:link[@rel='self']/@type}" />
         </xsl:if>
         <link rel="shortcut icon" href="/favicon.ico" />
-        <script type="text/javascript" src="personalize.js"></script>
+        <script type="text/javascript" src="personalize.js">
+          <xsl:comment>HTML Compatibility</xsl:comment>
+        </script>
       </head>
 
       <xsl:text>&#10;&#10;</xsl:text>