diff --git a/scenarios/xslt/edxml2html/libs/html-philology.lib.xsl b/scenarios/xslt/edxml2html/libs/html-philology.lib.xsl
index 100ae78d7bf7b327e02a7e9a11a54c6b76cc2f47..ead210e831ef561990c649ccbd6ec0a3247c219c 100644
--- a/scenarios/xslt/edxml2html/libs/html-philology.lib.xsl
+++ b/scenarios/xslt/edxml2html/libs/html-philology.lib.xsl
@@ -260,7 +260,7 @@
                     <xsl:when test="@type='gr'">gr</xsl:when>
                     <xsl:when test="@type='rek'">rek</xsl:when>
                     <xsl:when test="@type='con'">inh</xsl:when>
-                    <xsl:otherwise>XX</xsl:otherwise>
+                    <xsl:otherwise>xx</xsl:otherwise>
                 </xsl:choose>
             </label>
             <input id="{$noteItemId}" type="checkbox"/>