diff --git a/tests/YoutubeTest.php b/tests/YoutubeTest.php
index 9336e0b..641e7a7 100644
--- a/tests/YoutubeTest.php
+++ b/tests/YoutubeTest.php
@@ -59,13 +59,14 @@ public function testInvalidApiKey()
     public function testGetCategories()
     {
         $region = 'US';
-        $response = $this->youtube->getCategories($region);
+        $part = ['snippet'];
+        $response = $this->youtube->getCategories($region,$part);
 
         $this->assertNotNull('response');
         $this->assertEquals('youtube#videoCategory', $response[0]->kind);
         //add all these assertions here in case the api is changed,
         //we can detect it instantly
-        $this->assertObjectHasAttribute('snippet', $response);
+        $this->assertObjectHasAttribute('snippet', $response[0]);
     }
 
     public function testGetVideoInfo()