diff --git a/Service/TokenAuthenticator.php b/Service/TokenAuthenticator.php
index 1c702bc..ef394d7 100644
--- a/Service/TokenAuthenticator.php
+++ b/Service/TokenAuthenticator.php
@@ -43,7 +43,7 @@ public function authenticateToken(TokenInterface $token, UserProviderInterface $
         if (!$userProvider instanceof TokenUserProvider) {
             throw new \InvalidArgumentException(
                 sprintf(
-                    'The user provider must be an instance of ApiUserProvider (%s was given).',
+                    'The user provider must be an instance of TokenUserProvider (%s was given).',
                     get_class($userProvider)
                 )
             );