diff --git a/src/MiladRahimi/PHPRouter/Router.php b/src/MiladRahimi/PHPRouter/Router.php
index 14d1ee3..f8ce3b5 100644
--- a/src/MiladRahimi/PHPRouter/Router.php
+++ b/src/MiladRahimi/PHPRouter/Router.php
@@ -366,7 +366,7 @@ public function get($routes = null, $controller = null, $middleware = null) {
      * @param callable|string|null $middleware
      */
     public function map($methods, $routes, $controller, $middleware = null) {
-        if (!isset($methods)) {
+        if ($methods !== null && !isset($methods)) {
             throw new InvalidArgumentException("Methods must be set");
         }
         if (!isset($routes)) {