diff --git a/src/Provider/Azure.php b/src/Provider/Azure.php
index b928282..269426b 100644
--- a/src/Provider/Azure.php
+++ b/src/Provider/Azure.php
@@ -339,7 +339,7 @@ public function getLogoutUrl($post_logout_redirect_uri = "")
     public function validateAccessToken($accessToken)
     {
         $keys        = $this->getJwtVerificationKeys();
-        $tokenClaims = (array)JWT::decode($accessToken, $keys, ['RS256']);
+        $tokenClaims = (array)JWT::decode($accessToken, $keys);
 
         $this->validateTokenClaims($tokenClaims);
 
diff --git a/src/Token/AccessToken.php b/src/Token/AccessToken.php
index 7de80f9..a268c20 100644
--- a/src/Token/AccessToken.php
+++ b/src/Token/AccessToken.php
@@ -3,9 +3,8 @@
 namespace TheNetworg\OAuth2\Client\Token;
 
 use Firebase\JWT\JWT;
-use InvalidArgumentException;
-use League\OAuth2\Client\Tool\RequestFactory;
 use RuntimeException;
+use TheNetworg\OAuth2\Client\Provider\Azure;
 
 class AccessToken extends \League\OAuth2\Client\Token\AccessToken
 {
@@ -13,6 +12,9 @@ class AccessToken extends \League\OAuth2\Client\Token\AccessToken
 
     protected $idTokenClaims;
 
+    /**
+     * @param Azure $provider
+     */
     public function __construct(array $options, $provider)
     {
         parent::__construct($options);
@@ -27,7 +29,7 @@ public function __construct(array $options, $provider)
                 $tks = explode('.', $this->idToken);
                 // Check if the id_token contains signature
                 if (3 == count($tks) && !empty($tks[2])) {
-                    $idTokenClaims = (array)JWT::decode($this->idToken, $keys, ['RS256']);
+                    $idTokenClaims = (array)JWT::decode($this->idToken, $keys);
                 } else {
                     // The id_token is unsigned (coming from v1.0 endpoint) - https://msdn.microsoft.com/en-us/library/azure/dn645542.aspx