diff --git a/html/up2to3.html b/html/up2to3.html
index 04a6337aa6d457397e435dc81ee01f8c1b19b19a..9df2b6b4f82e11a0bfd1ba6214589d5ec23bdfc4 100644
--- a/html/up2to3.html
+++ b/html/up2to3.html
@@ -47,6 +47,10 @@
   invoke <tt>OWLAPIAlignment.toOWLAPIAlignment( URIAlignment )</tt>. It
   will return the corresponding <tt>OWLAPIAlignment</tt>.</p>
 
+<p>Moreover, <tt>AlignmentParser.parse( URI )</tt> used to take a
+  Hashtable as a second argument. This is not true anymore: you must
+  suppress this second argument.</p>
+
 <h2>Invoking your alignment</h2>
 
 <p>For invoking your alignment class, the sequence used to be the