diff --git a/Validate.php b/Validate.php
index 88ee4a8..36e3956 100644
--- a/Validate.php
+++ b/Validate.php
@@ -59,7 +59,7 @@ class Validate
      * @param string $address IP address
      * @return bool is the IP Address valid?
      */
-    static function ip(string $address) : bool
+    static function ip (string $address) : bool
     {
         return false !== filter_var($address, FILTER_VALIDATE_IP);
     }
@@ -84,6 +84,16 @@ class Validate
         return false !== filter_var($address, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6);
     }
 
+    /**
+     * Static function for validation a Mac Address.
+     * @param string $address mac address
+     * @return bool is the mac valid?
+     */
+    static function mac (string $address) : bool
+    {
+        return false !== filter_var($address, FILTER_VALIDATE_MAC);
+    }
+
     /**
      * Static function for validating a number range.
      * @param float $value number to validate