diff --git a/tei2html.xsl b/tei2html.xsl
index 5a0ba80..615fde3 100644
--- a/tei2html.xsl
+++ b/tei2html.xsl
@@ -925,6 +925,7 @@
 
   <xsl:template name="create_index">
     <xsl:param name="indextype"/>
+		<xsl:message>creating index...</xsl:message>
 
 		<!-- all index elements starting with the same letter: -->
 		<xsl:for-each-group select="//tei:index[lower-case(@indexName) = $indextype]" group-by="substring(if (exists(./tei:term/@sortKey)) then ./tei:term/@sortKey else ./tei:term/text(),1,1)">
@@ -954,6 +955,10 @@
 								<xsl:variable name="local_uri" select="concat($series, '/', $publication_number, '/', $chapter_nr , '/index.html#', $paragraph_nr)"/>
 								<xsl:variable name="global_uri" select="concat($domain, '/', $local_uri)"/>
 
+								<xsl:message>
+									<xsl:value-of select="concat(current-grouping-key(), ': ', $global_uri)"/>
+								</xsl:message>
+
 								<li>
 									<a href="{$global_uri}"> <xsl:value-of select="position()"/></a>
 								</li>