diff --git a/src/Symfony/Component/Security/Http/Util/TargetPathTrait.php b/src/Symfony/Component/Security/Http/Util/TargetPathTrait.php
index 986adb0c5830..87ff333e05f6 100644
--- a/src/Symfony/Component/Security/Http/Util/TargetPathTrait.php
+++ b/src/Symfony/Component/Security/Http/Util/TargetPathTrait.php
@@ -38,7 +38,7 @@ private function saveTargetPath(SessionInterface $session, $providerKey, $uri)
      * @param SessionInterface $session
      * @param string           $providerKey The name of your firewall
      *
-     * @return string
+     * @return string|null
      */
     private function getTargetPath(SessionInterface $session, $providerKey)
     {