ussd: send NotRecognized error for invalid USSD

diff --git a/src/ussd.c b/src/ussd.c
index 29cf1b4..74888b2 100644 (file)
--- a/src/ussd.c
+++ b/src/ussd.c
@@ -573,7 +573,7 @@ static DBusMessage *ussd_initiate(DBusConnection *conn, DBusMessage *msg,
 
        DBG("No.., checking if this is a USSD string");
        if (!valid_ussd_string(str, call_in_progress))
-               return __ofono_error_invalid_format(msg);
+               return __ofono_error_not_recognized(msg);
 
        if (!ussd_encode(str, &num_packed, buf))
                return __ofono_error_invalid_format(msg);