diff --git a/src/java/fr/paris/lutece/portal/web/xsl/XslExportJspBean.java b/src/java/fr/paris/lutece/portal/web/xsl/XslExportJspBean.java
index fdc9a32a8f..62ba8696a7 100644
--- a/src/java/fr/paris/lutece/portal/web/xsl/XslExportJspBean.java
+++ b/src/java/fr/paris/lutece/portal/web/xsl/XslExportJspBean.java
@@ -513,10 +513,10 @@ private String getXslExportData( HttpServletRequest request, XslExport xslExport
     private String isValid( byte [ ] baXslSource )
     {
         String strError = null;
-
+        SAXParserFactory factory = SAXParserFactory.newInstance( );
         try
         {
-            SAXParserFactory factory = SAXParserFactory.newInstance( );
+            factory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
             SAXParser analyzer = factory.newSAXParser( );
             InputSource is = new InputSource( new ByteArrayInputStream( baXslSource ) );
             analyzer.getXMLReader( ).parse( is );