diff --git a/tests/test_view.py b/tests/test_view.py
index b9383b7..b275142 100644
--- a/tests/test_view.py
+++ b/tests/test_view.py
@@ -19,6 +19,10 @@ class ManifestTest(TestCase):
         """GET /manifest.json Should return status code 200"""
         self.assertEqual(self.response.status_code, 200)
 
+    def test_content_type_json(self):
+        """The content type Must be JSON"""
+        self.assertEqual(self.response['content-type'], 'application/json')
+
     def test_template(self):
         """Must have the template manifest.json"""
         self.assertTemplateUsed(self.response, 'manifest.json')