diff --git a/daemon/src/sip/sipvoiplink.cpp b/daemon/src/sip/sipvoiplink.cpp
index a9a3b3d9f3eab5a8a2ed6bdd90a78cfbdd14c383..dd2d87fa77c65963d3b1231d0b22c3729bf978b5 100644
--- a/daemon/src/sip/sipvoiplink.cpp
+++ b/daemon/src/sip/sipvoiplink.cpp
@@ -284,19 +284,17 @@ void SIPVoIPLink::sendRegister (Account *a)
         pjsip_transport_dec_ref(account->transport);
 
     createSipTransport(account);
-	if (account->transport)
-		return;
-
-	// Could not create new transport, this transport may already exists
-    account->transport = transportMap_[account->getLocalPort()];
-	if (account->transport) {
-		pjsip_transport_add_ref(account->transport);
-	} else {
-		account->transport = _localUDPTransport;
-		account->setLocalPort(_localUDPTransport->local_name.port);
-    }
 
-	ost::MutexLock m(mutexSIP_);
+	if (!account->transport) {
+		// Could not create new transport, this transport may already exists
+		account->transport = transportMap_[account->getLocalPort()];
+		if (account->transport) {
+			pjsip_transport_add_ref(account->transport);
+		} else {
+			account->transport = _localUDPTransport;
+			account->setLocalPort(_localUDPTransport->local_name.port);
+		}
+	}
 
 	account->setRegister(true);
 	account->setRegistrationState (Trying);
diff --git a/daemon/src/sip/sipvoiplink.h b/daemon/src/sip/sipvoiplink.h
index 4b64720bd596b6e88c8610b0432796b22e362e87..37aeba028f3389dd6f233b9f1430cc5205ce4113 100644
--- a/daemon/src/sip/sipvoiplink.h
+++ b/daemon/src/sip/sipvoiplink.h
@@ -350,11 +350,6 @@ class SIPVoIPLink : public VoIPLink
          */
         EventThread *evThread_;
 
-        /**
-         * Global mutex for the sip voiplink
-         */
-        ost::Mutex mutexSIP_;
-
         friend class SIPTest;
 };