diff --git a/classes/Config.php b/classes/Config.php
index c7befdf..cc13c3c 100644
--- a/classes/Config.php
+++ b/classes/Config.php
@@ -70,4 +70,9 @@ class Config
         }
         return self::$instance;
     }
+
+    public static function destroyInstance()
+    {
+        self::$instance = null;
+    }
 }
diff --git a/tests/VideoDownloadTest.php b/tests/VideoDownloadTest.php
index 4855d74..bfe4e4d 100644
--- a/tests/VideoDownloadTest.php
+++ b/tests/VideoDownloadTest.php
@@ -32,6 +32,11 @@ class VideoDownloadTest extends \PHPUnit_Framework_TestCase
         $this->download = new VideoDownload();
     }
 
+    protected function tearDown()
+    {
+        \Alltube\Config::destroyInstance();
+    }
+
     /**
      * Test listExtractors function
      *