diff --git a/coreapi/bellesip_sal/sal_op_call.c b/coreapi/bellesip_sal/sal_op_call.c
index 76ea05782..dd7ede609 100644
--- a/coreapi/bellesip_sal/sal_op_call.c
+++ b/coreapi/bellesip_sal/sal_op_call.c
@@ -523,10 +523,15 @@ int sal_call_set_local_media_description(SalOp *op, SalMediaDescription *desc){
 	op->base.local_media=desc;
 	return 0;
 }
-static void sal_op_fill_invite(SalOp *op, belle_sip_request_t* invite) {
+
+static belle_sip_header_allow_t *create_allow(){
 	belle_sip_header_allow_t* header_allow;
-	header_allow = belle_sip_header_allow_create("INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO");
-	belle_sip_message_add_header(BELLE_SIP_MESSAGE(invite),BELLE_SIP_HEADER(header_allow));
+        header_allow = belle_sip_header_allow_create("INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO");
+	return header_allow;
+}
+
+static void sal_op_fill_invite(SalOp *op, belle_sip_request_t* invite) {
+	belle_sip_message_add_header(BELLE_SIP_MESSAGE(invite),BELLE_SIP_HEADER(create_allow()));
 
 	if (op->base.root->session_expires!=0){
 		belle_sip_message_add_header(BELLE_SIP_MESSAGE(invite),belle_sip_header_create( "Session-expires", "200"));
@@ -630,6 +635,7 @@ int sal_call_accept(SalOp*h){
 		ms_error("Fail to build answer for call");
 		return -1;
 	}
+	belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),BELLE_SIP_HEADER(create_allow()));
 	if (h->base.root->session_expires!=0){
 		if (h->supports_session_timers) {
 			belle_sip_message_add_header(BELLE_SIP_MESSAGE(response),belle_sip_header_create( "Supported", "timer"));
diff --git a/coreapi/bellesip_sal/sal_op_impl.c b/coreapi/bellesip_sal/sal_op_impl.c
index 77cff3577..7e24389fb 100644
--- a/coreapi/bellesip_sal/sal_op_impl.c
+++ b/coreapi/bellesip_sal/sal_op_impl.c
@@ -130,7 +130,7 @@ belle_sip_response_t *sal_op_create_response_from_request(SalOp *op, belle_sip_r
 int sal_ping(SalOp *op, const char *from, const char *to){
 	sal_op_set_from(op,from);
 	sal_op_set_to(op,to);
-	return sal_op_send_request(op,sal_op_build_request(op,"OPTION"));
+	return sal_op_send_request(op,sal_op_build_request(op,"OPTIONS"));
 }
 
 void sal_op_set_remote_ua(SalOp*op,belle_sip_message_t* message) {
@@ -241,7 +241,7 @@ int sal_op_send_request(SalOp* op, belle_sip_request_t* request)  {
 	if (strcmp(belle_sip_request_get_method(request),"INVITE")==0
 			||strcmp(belle_sip_request_get_method(request),"REGISTER")==0
 			||strcmp(belle_sip_request_get_method(request),"SUBSCRIBE")==0
-			||strcmp(belle_sip_request_get_method(request),"OPTION")==0)
+			||strcmp(belle_sip_request_get_method(request),"OPTIONS")==0)
 		need_contact=TRUE;
 
 	return _sal_op_send_request_with_contact(op, request,need_contact);