diff --git a/src/Bundle/ChillMainBundle/Test/PrepareClientTrait.php b/src/Bundle/ChillMainBundle/Test/PrepareClientTrait.php
index 0ae7c235a..5df0b57dd 100644
--- a/src/Bundle/ChillMainBundle/Test/PrepareClientTrait.php
+++ b/src/Bundle/ChillMainBundle/Test/PrepareClientTrait.php
@@ -17,32 +17,31 @@
  */
 namespace Chill\MainBundle\Test;
 
+use Symfony\Bundle\FrameworkBundle\KernelBrowser;
 use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
 
 /**
- * Prepare a client authenticated with a user 
- *
- * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ * Prepare a client authenticated with a user
  */
 trait PrepareClientTrait
 {
     /**
      * Create a new client with authentication information.
-     * 
+     *
      * @param string $username the username (default 'center a_social')
      * @param string $password the password (default 'password')
      * @return \Symfony\Component\BrowserKit\Client
      * @throws \LogicException
      */
     public function getClientAuthenticated(
-        $username = 'center a_social', 
+        $username = 'center a_social',
         $password = 'password'
-    ) {
+    ): KernelBrowser {
         if (!$this instanceof WebTestCase) {
             throw new \LogicException(sprintf("The current class does not "
                 . "implements %s", WebTestCase::class));
         }
-        
+
         return static::createClient(array(), array(
            'PHP_AUTH_USER' => $username,
            'PHP_AUTH_PW'   => $password,