diff -ruN XML-Diff-0.05/Diff.pm XML-Diff-0.05p1/Diff.pm
--- XML-Diff-0.05/Diff.pm	2007-07-12 12:43:51.000000000 +0200
+++ XML-Diff-0.05p1/Diff.pm	2009-01-07 14:45:02.819443000 +0100
@@ -446,7 +446,7 @@
     }
 
     $self->{$type}->{doc} = $self->{parser}->createDocument();
-    $self->{$type}->{doc}->setDocumentElement( $source );
+    $self->{$type}->{doc}->setDocumentElement( $self->{$type}->{root} );
 
   } else {
     if( $source !~ /\n/ && -e $source ) {