diff --git a/en/defguide5/src/book5.xml b/en/defguide5/src/book5.xml
index 3d28094aa..477941127 100644
--- a/en/defguide5/src/book5.xml
+++ b/en/defguide5/src/book5.xml
@@ -1,7 +1,7 @@
 <book xmlns='http://docbook.org/ns/docbook'
       xmlns:xi='http://www.w3.org/2001/XInclude'
       xml:id="docbook">
-<?dbhtml filename="docbook.html" navigation="false"?>
+<?dbhtml filename="index.html" navigation="false"?>
 <xi:include href="../build/bookinfo.xml"/>
 
 <xi:include href="ch00-online.xml"/>
diff --git a/en/stylesheets/refentry.xsl b/en/stylesheets/refentry.xsl
index 33dbea4ed..1a1947ced 100644
--- a/en/stylesheets/refentry.xsl
+++ b/en/stylesheets/refentry.xsl
@@ -105,6 +105,9 @@
     <xsl:processing-instruction name="dbhtml">
       <xsl:text>filename="</xsl:text>
       <xsl:choose>
+        <xsl:when test="$pattern = 'db.index'">
+          <xsl:value-of select="'index-db'"/>
+        </xsl:when>
         <xsl:when test="starts-with($pattern, 'db.')">
           <xsl:value-of select="substring-after($pattern, 'db.')"/>
         </xsl:when>