diff --git a/include/transport/transport.h b/include/transport/transport.h
index 88b1b3b108c63c7f4d903a3fec1c9e8e97a6aca7..5c91442b7854a1ec3975f548a8cc2d2f345c5152 100644
--- a/include/transport/transport.h
+++ b/include/transport/transport.h
@@ -133,8 +133,8 @@ namespace Transport {
 			void handleConnected();
 			void handleConnectionError(const Swift::ComponentError &error);
 			void handlePresence(Swift::Presence::ref presence);
-			void handleDataRead(const std::string &data);
-			void handleDataWritten(const std::string &data);
+			void handleDataRead(const Swift::SafeByteArray &data);
+			void handleDataWritten(const Swift::SafeByteArray &data);
 
 // 			void handleDiscoInfoResponse(boost::shared_ptr<Swift::DiscoInfo> info, Swift::ErrorPayload::ref error, const Swift::JID& jid);
 			void handleCapsChanged(const Swift::JID& jid);