diff --git a/docs/page.xsl b/docs/page.xsl
index 548d5a11c4..20b49d1afd 100644
--- a/docs/page.xsl
+++ b/docs/page.xsl
@@ -80,7 +80,7 @@
     <xsl:param name="timestamp"/>
     <xsl:text disable-output-escaping="yes">&lt;!DOCTYPE html&gt;
 </xsl:text>
-    <html>
+    <html data-sourcedoc="{$pagesrc}">
       <xsl:comment>
         This file is autogenerated from <xsl:value-of select="$pagesrc"/>
         Do not edit this file. Changes will be lost.
