diff --git a/yowsupwrapper.py b/yowsupwrapper.py
index f5bece2..0ac9a38 100644
--- a/yowsupwrapper.py
+++ b/yowsupwrapper.py
@@ -742,9 +742,9 @@ class YowsupAppLayer(YowInterfaceLayer):
 	def onReceipt(self, entity):
 		"""Sends ack automatically"""
 		# entity is IncomingReceiptProtocolEntity
-		ack = OutgoingAckProtocolEntity(entity.getId(),
-				'receipt', entity.getType(), entity.getFrom())
-		self.toLower(ack)
+		#ack = OutgoingAckProtocolEntity(entity.getId(),
+		#		'receipt', entity.getType(), entity.getFrom())
+		self.toLower(entity.ack())
 		_id = entity._id
 		_from = entity._from
 		timestamp = entity.timestamp