diff --git a/src/Valitron/Validator.php b/src/Valitron/Validator.php
index d68007a..098a2f0 100644
--- a/src/Valitron/Validator.php
+++ b/src/Valitron/Validator.php
@@ -350,13 +350,18 @@ class Validator
      * @internal param array $fields
      * @return bool
      */
-    protected function validateIn($field, $value, $params, $strict = false)
+    protected function validateIn($field, $value, $params)
     {
         $isAssoc = array_values($params[0]) !== $params[0];
         if ($isAssoc) {
             $params[0] = array_keys($params[0]);
         }
 
+        $strict = false;
+        if (isset($params[1])) {
+            $strict = $params[1];
+        }
+
         return in_array($value, $params[0], $strict);
     }
 
diff --git a/tests/Valitron/ValidateTest.php b/tests/Valitron/ValidateTest.php
index 385190c..f8d3c06 100644
--- a/tests/Valitron/ValidateTest.php
+++ b/tests/Valitron/ValidateTest.php
@@ -273,6 +273,13 @@ class ValidateTest extends BaseTestCase
         $this->assertTrue($v->validate());
     }
 
+    public function testInStrictInvalid()
+    {
+        $v = new Validator(array('color' => '1'));
+        $v->rule('in', 'color', array(1, 2, 3), true);
+        $this->assertFalse($v->validate());
+    }
+
     public function testArrayValid()
     {
         $v = new Validator(array('colors' => array('yellow')));