diff --git a/SAXresult/dtd3 b/SAXresult/dtd3
index c32c45e..f83174a 100644
--- a/SAXresult/dtd3
+++ b/SAXresult/dtd3
@@ -1,6 +1,6 @@
 SAX.setDocumentLocator()
 SAX.startDocument()
-SAX.internalSubset(doc, (null), (null))
+SAX.internalSubset(doc, , )
 SAX.elementDecl(doc, 2, ...)
 SAX.startElement(doc)
 SAX.characters(This is a valid document !, 26)