diff --git a/src/Symfony/Component/Security/Core/Authorization/Voter/VoterInterface.php b/src/Symfony/Component/Security/Core/Authorization/Voter/VoterInterface.php
index d00ff1cfae..1032cb200d 100644
--- a/src/Symfony/Component/Security/Core/Authorization/Voter/VoterInterface.php
+++ b/src/Symfony/Component/Security/Core/Authorization/Voter/VoterInterface.php
@@ -27,7 +27,7 @@ interface VoterInterface
     /**
      * Checks if the voter supports the given attribute.
      *
-     * @param string $attribute An attribute
+     * @param mixed $attribute An attribute (usually the attribute name string)
      *
      * @return bool true if this Voter supports the attribute, false otherwise
      */