diff --git a/stanzahandling.go b/stanzahandling.go
index 67fba04..da759b0 100644
--- a/stanzahandling.go
+++ b/stanzahandling.go
@@ -69,6 +69,9 @@ func rcvStanzas(client *xmpp.Client, iqc chan xmpp.IQ, msgc chan xmpp.Chat, ctx
 				if query != nil {
 					xmlns = query.SelectAttr("xmlns")
 				}
+				if xmlns == nil {
+					break
+				}
 				switch xmlns.Value {
 				case nsDiscoInfo:
 					root := etree.NewDocument()