diff --git a/src/danog/MadelineProto/RPCErrorException.php b/src/danog/MadelineProto/RPCErrorException.php
index 0ae6b892..068c030f 100644
--- a/src/danog/MadelineProto/RPCErrorException.php
+++ b/src/danog/MadelineProto/RPCErrorException.php
@@ -65,6 +65,7 @@ class RPCErrorException extends \Exception
             case 'PEER_ID_INVALID': $message = 'The provided peer id is invalid'; break;
             case 'CHAT_ID_INVALID': $message = 'The provided chat id is invalid'; break;
             case 'MESSAGE_DELETE_FORBIDDEN': $message = "You can't delete one of the messages you tried to delete, most likely because it is a service message."; break;
+            case 'CHAT_ADMIN_REQUIRED': $message = 'You must be an admin in this chat to do this'; break;
             case -429: $message = 'Too many requests'; break;
         }
         parent::__construct($message, $code, $previous);
diff --git a/src/danog/MadelineProto/VoIP/AuthKeyHandler.php b/src/danog/MadelineProto/VoIP/AuthKeyHandler.php
index f990a520..793545e8 100644
--- a/src/danog/MadelineProto/VoIP/AuthKeyHandler.php
+++ b/src/danog/MadelineProto/VoIP/AuthKeyHandler.php
@@ -87,7 +87,7 @@ trait AuthKeyHandler
             }
             if ($e->rpc === 'CALL_ALREADY_DECLINED') {
                 \danog\MadelineProto\Logger::log(['Call '.$call['id'].' already declined']);
-                $this->calls[$res['phone_call']['id']]->discard();
+                $this->calls[$call['id']]->discard();
                 return false;
             }
             throw $e;