diff --git a/src/Security/SQLLoginUserAuthenticator.php b/src/Security/SQLLoginUserAuthenticator.php
index 6670214..239f94e 100644
--- a/src/Security/SQLLoginUserAuthenticator.php
+++ b/src/Security/SQLLoginUserAuthenticator.php
@@ -84,9 +84,11 @@ class SQLLoginUserAuthenticator extends AbstractLoginFormAuthenticator
             $request->getSession()->set(self::ERROR_LOGIN, true);
             throw new AuthenticationException();
         }
-        if (!$remoteHashedPassword) {
-            throw new Exception('Erreur inconnue');
+
+        if (null === $remoteHashedPassword) {
+            $remoteHashedPassword = "";
         }
+
         try {
             // Comparaison remote hash et hash du input password + salt
             $this->passwordHasher->verify($remoteHashedPassword, $plaintextPassword, $remoteSalt);