diff --git a/stanza/message.go b/stanza/message.go
index 954d515..a6364b0 100644
--- a/stanza/message.go
+++ b/stanza/message.go
@@ -8,9 +8,10 @@ import (
 // ============================================================================
 // Message Packet
 
+// LocalizedString is a string node with a language attribute.
 type LocalizedString struct {
 	Content string `xml:",chardata"`
-	Lang    string `xml:"lang,attr,omitempty"`
+	Lang    string `xml:"http://www.w3.org/XML/1998/namespace lang,attr,omitempty"`
 }
 
 // Message implements RFC 6120 - A.5 Client Namespace (a part)
diff --git a/stanza/packet.go b/stanza/packet.go
index 567796d..00f76ba 100644
--- a/stanza/packet.go
+++ b/stanza/packet.go
@@ -10,7 +10,7 @@ type Attrs struct {
 	Id   string     `xml:"id,attr,omitempty"`
 	From string     `xml:"from,attr,omitempty"`
 	To   string     `xml:"to,attr,omitempty"`
-	Lang string     `xml:"lang,attr,omitempty"`
+	Lang string     `xml:"http://www.w3.org/XML/1998/namespace lang,attr,omitempty"`
 }
 
 type packetFormatter interface {