diff --git a/src/Symfony/Component/BrowserKit/Cookie.php b/src/Symfony/Component/BrowserKit/Cookie.php
index 424f78bab4f44..18b9324403091 100644
--- a/src/Symfony/Component/BrowserKit/Cookie.php
+++ b/src/Symfony/Component/BrowserKit/Cookie.php
@@ -77,7 +77,7 @@ public function __construct($name, $value, $expires = null, $path = null, $domai
         if (null !== $expires) {
             $timestampAsDateTime = \DateTime::createFromFormat('U', $expires);
             if (false === $timestampAsDateTime) {
-                throw new \UnexpectedValueException(sprintf('The cookie expiration time "%s" is not valid.'), $expires);
+                throw new \UnexpectedValueException(sprintf('The cookie expiration time "%s" is not valid.', $expires));
             }
 
             $this->expires = $timestampAsDateTime->getTimestamp();