diff --git a/src/Symfony/Component/Security/Core/Authentication/Provider/AuthenticationProviderInterface.php b/src/Symfony/Component/Security/Core/Authentication/Provider/AuthenticationProviderInterface.php
index c8432163b6969..dfa8fae1d4c54 100644
--- a/src/Symfony/Component/Security/Core/Authentication/Provider/AuthenticationProviderInterface.php
+++ b/src/Symfony/Component/Security/Core/Authentication/Provider/AuthenticationProviderInterface.php
@@ -31,5 +31,5 @@ interface AuthenticationProviderInterface extends AuthenticationManagerInterface
      *
      * @return Boolean true if the implementation supports the Token, false otherwise
      */
-     function supports(TokenInterface $token);
+     public function supports(TokenInterface $token);
 }