diff --git a/src/Nullable.php b/src/Nullable.php
index 028df3c..8a48a38 100644
--- a/src/Nullable.php
+++ b/src/Nullable.php
@@ -32,7 +32,7 @@ public function __construct($value = null, array $message = [], $predicate = nul
     /**
      * Get the value of nullable object or the default in case of null.
      *
-     * @param  string  $default
+     * @param  string|array  $default
      * @return mixed|null
      */
     public function getOr($default)
@@ -72,7 +72,7 @@ public function getOrAbort($code, $message = '', array $headers = [])
     /**
      * check valid http response.
      *
-     * @param  string  $callable
+     * @param  string|array  $callable
      * @return mixed|null
      */
     public function getOrSend($callable)