diff --git a/libs/ymgcp/transaction.cpp b/libs/ymgcp/transaction.cpp
index 4ce73922..41f78c86 100644
--- a/libs/ymgcp/transaction.cpp
+++ b/libs/ymgcp/transaction.cpp
@@ -304,10 +304,9 @@ void MGCPTransaction::processMessage(MGCPMessage* msg)
 	    ok = !m_response;
 	    if (ok)
 		m_response = msg;
-	    else {
-		retrans = (m_response->code() == msg->code());
-		if (retrans)
-		    send(m_ack);
+	    else if (m_response->code() == msg->code()) {
+		retrans = true;
+		send(m_ack);
 	    }
 	    DDebug(m_engine,(ok || retrans) ? DebugAll : DebugNote,
 		"%s. Received %sresponse %d [%p]",m_debug.c_str(),