diff --git a/mysyde/frontend/frontend_mysyde.php b/mysyde/frontend/frontend_mysyde.php
index 1e4d169..ac978db 100644
--- a/mysyde/frontend/frontend_mysyde.php
+++ b/mysyde/frontend/frontend_mysyde.php
@@ -69,7 +69,7 @@
                             transform="translate(-3.232 -4.31)" />
                     </g>
                 </svg>
-                <a href="https://login.microsoftonline.com/common/oauth2/v2.0/logout?post_logout_redirect_uri=https://awo-hamburg.breadcrumb-online.de/dev/de/logout/" onclick="delete_coockie()">Abmelden</a>
+                <a href="<?= getenv('DISABLE_MS_AUTH') === '1' ? '/?action=intranet_logout' : 'https://login.microsoftonline.com/common/oauth2/v2.0/logout?post_logout_redirect_uri=https://awo-hamburg.breadcrumb-online.de/dev/de/logout/' ?>" onclick="delete_coockie()">Abmelden</a>
             </div>
             <script>
             function delete_coockie() {
@@ -111,7 +111,7 @@
                                 transform="translate(-3.232 -4.31)" />
                         </g>
                     </svg>
-                    <a href="https://login.microsoftonline.com/common/oauth2/v2.0/logout?post_logout_redirect_uri=https://awo-hamburg.breadcrumb-online.de/dev/de/logout/" onclick="logout(<?php echo $_SESSION['login_id']; ?>)">Abmelden</a>
+                    <a href="<?= getenv('DISABLE_MS_AUTH') === '1' ? '/?action=intranet_logout' : 'https://login.microsoftonline.com/common/oauth2/v2.0/logout?post_logout_redirect_uri=https://awo-hamburg.breadcrumb-online.de/dev/de/logout/' ?>" onclick="logout(<?php echo $_SESSION['login_id']; ?>)">Abmelden</a>
                 </div>
             </div>
         </div>