diff --git a/src/Valitron/Validator.php b/src/Valitron/Validator.php
index 0a96bf2..15bb32c 100644
--- a/src/Valitron/Validator.php
+++ b/src/Valitron/Validator.php
@@ -517,7 +517,7 @@ class Validator
     {
         $parsed = date_parse_from_format($params[0], $value);
 
-        return $parsed['error_count'] === 0;
+        return $parsed['error_count'] === 0 && $parsed['warning_count'] === 0;
     }
 
     /**
diff --git a/tests/Valitron/ValidateTest.php b/tests/Valitron/ValidateTest.php
index d1ae011..eb51756 100644
--- a/tests/Valitron/ValidateTest.php
+++ b/tests/Valitron/ValidateTest.php
@@ -449,6 +449,10 @@ class ValidateTest extends BaseTestCase
         $v = new Validator(array('date' => 'no thanks'));
         $v->rule('dateFormat', 'date', 'Y-m-d');
         $this->assertFalse($v->validate());
+
+        $v = new Validator(array('date' => '2013-27-01'));
+        $v->rule('dateFormat', 'date', 'Y-m-d');
+        $this->assertFalse($v->validate());
     }
 
     public function testDateBeforeValid()