diff --git a/lib/mastodon.py b/lib/mastodon.py
index 9a0af19..3889e73 100644
--- a/lib/mastodon.py
+++ b/lib/mastodon.py
@@ -150,7 +150,7 @@ def post_from_api_object(obj, instance):
             favourite=obj['favourited'],
             has_media=('media_attachments' in obj
                        and bool(obj['media_attachments'])),
-            created_at=iso8601.parse_date(obj['created_at']),
+            created_at=obj['created_at'],
             author_id=account_from_api_object(obj['account'], instance).id,
             direct=obj['visibility'] == 'direct',
         )
diff --git a/test/test_libbrotli.py b/test/test_libbrotli.py
index a87308f..4365f49 100644
--- a/test/test_libbrotli.py
+++ b/test/test_libbrotli.py
@@ -13,9 +13,10 @@ def app(redisdb):
     app_.config['REDIS_URI'] = 'redis://localhost:15487'
     app_.debug = True
 
-    @app_.route('/')
-    def hello():
-        return 'Hello, world!'
+    @app_.route('/', defaults={'name': 'world'})
+    @app_.route('/<name>')
+    def hello(name='world'):
+        return 'Hello, {name}!'.format(name=name)
     with app_.app_context():
         yield app_