diff --git a/src/MenuBuilder.php b/src/MenuBuilder.php
index 063ae6a..26089cc 100644
--- a/src/MenuBuilder.php
+++ b/src/MenuBuilder.php
@@ -55,7 +55,7 @@ class MenuBuilder
      * @param  array $menu
      * @return array
      */
-    public function build($menu = [])
+    public function build($menu)
     {
         $this->menu = $this->filter((array) $menu);