diff --git a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.cpp b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.cpp
index d42176e..72fb599 100644
--- a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.cpp
+++ b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.cpp
@@ -8,6 +8,7 @@ bool Controller::login(const std::string& username, const std::string& password)
 
 void Controller::logout()
 {
+    m_authenticationManagementService.logout();
 }
 
 void Controller::changePassword(const std::string& newPassword)
diff --git a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.h b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.h
index cb21b85..609d6eb 100644
--- a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.h
+++ b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.h
@@ -4,6 +4,7 @@
 #include "Enums.h"
 #include "UserManagementService.h"
 #include "ServiceManagementService.h"
+#include "AuthenticationManagementService.h"
 
 class Service;
 class ComboPackage;
@@ -17,6 +18,7 @@ class Notification;
 class Controller
 {
 private:
+    AuthenticationManagementService  m_authenticationManagementService;
     UserManagementService m_userManagementService;
     ServiceManagementService m_serviceManagementService;    
 public:
diff --git a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/AuthenticationManagementService.cpp b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/AuthenticationManagementService.cpp
index ca07fee..cf79ab5 100644
--- a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/AuthenticationManagementService.cpp
+++ b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/AuthenticationManagementService.cpp
@@ -1,3 +1,8 @@
 #include "AuthenticationManagementService.h"
 
 User* AuthenticationManagementService::m_authenticatedUser = nullptr;
+
+void AuthenticationManagementService::logout()
+{
+	m_authenticatedUser = nullptr;
+}
\ No newline at end of file
diff --git a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/AdminMenu.cpp b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/AdminMenu.cpp
index 5954281..69343fe 100644
--- a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/AdminMenu.cpp
+++ b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/AdminMenu.cpp
@@ -37,6 +37,7 @@ bool AdminMenu::handleOperation(int choice)
 
 void AdminMenu::logout()
 {
+	m_controller.logout();
 }
 
 void AdminMenu::changePassword()
diff --git a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.cpp b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.cpp
index d6c4d57..e087cb4 100644
--- a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.cpp
+++ b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.cpp
@@ -38,3 +38,8 @@ void TechnicianMenu::completeJob()
 void TechnicianMenu::viewNotifications()
 {
 }
+
+void TechnicianMenu::logout()
+{
+	m_controller.logout();
+}
\ No newline at end of file
diff --git a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.h b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.h
index c366d9b..53449af 100644
--- a/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.h
+++ b/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.h
@@ -10,4 +10,5 @@ public:
     void showMenu();
     void completeJob();
     void viewNotifications();
+    void logout();
 };