diff --git a/src/JsonSchema/Validator.php b/src/JsonSchema/Validator.php
index e2a919bc..c660f0eb 100644
--- a/src/JsonSchema/Validator.php
+++ b/src/JsonSchema/Validator.php
@@ -41,6 +41,8 @@ public function validate(&$value, $schema = null, $checkMode = null)
             $this->factory->setConfig($checkMode);
         }
 
+        $this->reset();
+
         $validator = $this->factory->createInstanceFor('schema');
         $validator->check($value, $schema);