diff --git a/auth_algo.hpp b/auth_algo.hpp
index 682c091..6bd32d0 100644
--- a/auth_algo.hpp
+++ b/auth_algo.hpp
@@ -9,10 +9,10 @@
 {
 namespace rakp_auth
 {
-
 constexpr size_t USER_KEY_MAX_LENGTH = 20;
 constexpr size_t BMC_RANDOM_NUMBER_LEN = 16;
 constexpr size_t REMOTE_CONSOLE_RANDOM_NUMBER_LEN = 16;
+extern const std::string userName;
 
 /**
  * @enum RAKP Authentication Algorithms