diff --git a/src/Validate.php b/src/Validate.php
index b673f9f2b4bd7afed3a213eb8c9aa0a0252fd281..6d34504a60f545ec3a80fb62c4956d36a1969082 100644
--- a/src/Validate.php
+++ b/src/Validate.php
@@ -944,10 +944,10 @@ class Validate
         if (is_string($rule) && strpos($rule, ',')) {
             list($rule, $param) = explode(',', $rule);
         } elseif (is_array($rule)) {
-            $param = isset($rule[1]) ? $rule[1] : null;
+            $param = isset($rule[1]) ? $rule[1] : 0;
             $rule  = $rule[0];
         } else {
-            $param = null;
+            $param = 0;
         }
 
         return false !== filter_var($value, is_int($rule) ? $rule : filter_id($rule), $param);