--- a/util/stanza.lua	Mon Nov 25 20:44:05 2019 +0100
+++ b/util/stanza.lua	Mon Nov 25 20:46:55 2019 +0100
@@ -438,7 +438,7 @@
 		error("bad argument to reply: expected stanza, got "..type(orig));
 	end
 	return new_stanza(orig.name,
-		orig.attr and {
+		{
 			to = orig.attr.from,
 			from = orig.attr.to,
 			id = orig.attr.id,