diff --git a/pn-xslt/Biblio2HTML.xsl b/pn-xslt/Biblio2HTML.xsl
index 8ce55f9d..b3546961 100644
--- a/pn-xslt/Biblio2HTML.xsl
+++ b/pn-xslt/Biblio2HTML.xsl
@@ -24,8 +24,8 @@
         <link rel="stylesheet" href="/css/yui/reset-fonts-grids.css" type="text/css" media="screen" title="no title" charset="utf-8"/>
         <link rel="stylesheet" href="/css/master.css" type="text/css" media="screen" title="no title" charset="utf-8" />
         <title><xsl:value-of select="t:bibl/t:idno[@type='pi']"/></title>
-        <link rel="stylesheet" href="/css/custom-theme/jquery-ui-1.14.1.min.css" type="text/css" media="screen" title="no title" charset="utf-8">
-        <link rel="stylesheet" href="/css/custom-theme/jquery-ui-dul-theme-shim.css" type="text/css" media="screen" title="no title" charset="utf-8">
+        <link rel="stylesheet" href="/css/custom-theme/jquery-ui-1.14.1.min.css" type="text/css" media="screen" title="no title" charset="utf-8" />
+        <link rel="stylesheet" href="/css/custom-theme/jquery-ui-dul-theme-shim.css" type="text/css" media="screen" title="no title" charset="utf-8" />
         <script src="/js/jquery-1.5.1.min.js" type="text/javascript" charset="utf-8"></script>
         <script src="/js/jquery-3.7.1.min.js" type="text/javascript" charset="utf-8"></script>
         <script src="/js/jquery-migrate-3.5.2.min.js" type="text/javascript" charset="utf-8"></script>