diff --git a/core/AmSession.cpp b/core/AmSession.cpp
index 3ce5d8d9..71aeb90c 100644
--- a/core/AmSession.cpp
+++ b/core/AmSession.cpp
@@ -300,7 +300,7 @@ void AmSession::negotiate(const string& sdp_body,
   m_payloads = sdp.getCompatiblePayloads(getPayloadProvider(), MT_AUDIO, r_host, r_port);
 
   if (m_payloads.size() == 0)
-    throw AmSession::Exception(606,"could not find compatible payload");
+    throw AmSession::Exception(488,"could not find compatible payload");
     
 /*
   if(payload.int_pt == -1){