diff --git a/tests/endpoint_handlers/AuthRegistrationExecutor_TEST.cpp b/tests/endpoint_handlers/AuthRegistrationExecutor_TEST.cpp
index 68cc44c..f8f62cf 100644
--- a/tests/endpoint_handlers/AuthRegistrationExecutor_TEST.cpp
+++ b/tests/endpoint_handlers/AuthRegistrationExecutor_TEST.cpp
@@ -14,6 +14,8 @@
 #include "./../../src/exceptions/session_exception.h"
 #include "./../../src/helpers/helpers.h"
 
+const std::string kUUID = std::to_string(uad::Random());
+
 using namespace std;
 using namespace uad;
 using namespace boost;
@@ -102,7 +104,7 @@ BOOST_AUTO_TEST_CASE(AuthRegistrationExecutor_Succesfull_User_Login)
 
   req_body.emplace_object();
 
-  req_body.as_object().emplace("login"s, "MyLogin123456780");
+  req_body.as_object().emplace("login"s, "MyLogin123456780"s + kUUID);
   req_body.as_object().emplace("password"s, "Qwerty123456"s);
 
   req.body() = serialize(req_body);
@@ -133,7 +135,7 @@ BOOST_AUTO_TEST_CASE(AuthRegistrationExecutor_Unsuccesfull_User_Login)
 
   req_body.emplace_object();
 
-  req_body.as_object().emplace("login"s, "MyLogin123456780");
+  req_body.as_object().emplace("login"s, "MyLogin123456780"s + kUUID);
   req_body.as_object().emplace("password"s, "Qwerty123456"s);
 
   req.body() = serialize(req_body);