diff --git a/src/Signer/OpenSSL.php b/src/Signer/OpenSSL.php
index d9a4d2ec..1c7706cc 100644
--- a/src/Signer/OpenSSL.php
+++ b/src/Signer/OpenSSL.php
@@ -47,7 +47,7 @@ private function getPrivateKey($pem, $passphrase)
     /**
      * @param $expected
      * @param $payload
-     * @param $pem
+     * @param $key
      * @return bool
      */
     public function doVerify($expected, $payload, Key $key)