diff --git a/session.py b/session.py
index dd465bc..f78cc4c 100644
--- a/session.py
+++ b/session.py
@@ -88,7 +88,10 @@ class Session():
 					YowMessagesProtocolLayer,
 					YowReceiptProtocolLayer,
 					YowAckProtocolLayer,
-					YowMediaProtocolLayer, YowIqProtocolLayer, YowGroupsProtocolLayer)),
+					YowMediaProtocolLayer,
+					YowIqProtocolLayer,
+					YowGroupsProtocolLayer,
+					YowPresenceProtocolLayer)),
 				YowCoderLayer,
 				YowCryptLayer,
 				YowStanzaRegulator,