diff --git a/src/UnicaenAuth/Authentication/Storage/AuthFactory.php b/src/UnicaenAuth/Authentication/Storage/AuthFactory.php
index 7dc7f0e9c55a9a249e609b05d2a4cdf355260d9f..8fa4fed5fda374651d863df94dd63ecd2a01f139 100644
--- a/src/UnicaenAuth/Authentication/Storage/AuthFactory.php
+++ b/src/UnicaenAuth/Authentication/Storage/AuthFactory.php
@@ -4,6 +4,7 @@ namespace UnicaenAuth\Authentication\Storage;
 
 use Interop\Container\ContainerInterface;
 use Zend\Authentication\Storage\Session;
+use Zend\Session\Exception\RuntimeException;
 use Zend\Session\SessionManager;
 
 class AuthFactory
@@ -19,8 +20,19 @@ class AuthFactory
         $sessionManager = $container->get(SessionManager::class);
 
         $storage = new Auth();
-        $storage->setStorage(new Session(Usurpation::class, null, $sessionManager));
+
+        try {
+            $storage->setStorage(new Session(Usurpation::class, null, $sessionManager));
+        } catch (RuntimeException $e) {
+            /**
+             * Tentative de réagir en cas d'erreur suivante :
+             * "PHP Fatal error:  Uncaught Zend\Session\Exception\RuntimeException: Session validation failed in
+             * /var/www/sygal/vendor/zendframework/zend-session/src/SessionManager.php:160"
+             */
+            $sessionManager->regenerateId(true);
+            $storage->setStorage(new Session(Usurpation::class, null, $sessionManager));
+        }
 
         return $storage;
     }
-}
\ No newline at end of file
+}