diff --git a/tests/storage/servers/fastmail/__init__.py b/tests/storage/servers/fastmail/__init__.py
index 6471ef3..1c21c6d 100644
--- a/tests/storage/servers/fastmail/__init__.py
+++ b/tests/storage/servers/fastmail/__init__.py
@@ -4,24 +4,28 @@ import pytest
 
 
 class ServerMixin:
-
     @pytest.fixture
-    def get_storage_args(self, slow_create_collection):
-        def inner(collection='test'):
+    def get_storage_args(self, item_type, slow_create_collection):
+        if item_type == "VTODO":
+            # Fastmail has non-standard support for TODOs
+            # See https://github.com/pimutils/vdirsyncer/issues/824
+            pytest.skip("Fastmail has non-standard VTODO support.")
+
+        def inner(collection="test"):
             args = {
-                'username': os.environ['FASTMAIL_USERNAME'],
-                'password': os.environ['FASTMAIL_PASSWORD']
+                "username": os.environ["FASTMAIL_USERNAME"],
+                "password": os.environ["FASTMAIL_PASSWORD"],
             }
 
-            if self.storage_class.fileext == '.ics':
-                args['url'] = 'https://caldav.fastmail.com/'
-            elif self.storage_class.fileext == '.vcf':
-                args['url'] = 'https://carddav.fastmail.com/'
+            if self.storage_class.fileext == ".ics":
+                args["url"] = "https://caldav.fastmail.com/"
+            elif self.storage_class.fileext == ".vcf":
+                args["url"] = "https://carddav.fastmail.com/"
             else:
                 raise RuntimeError()
 
             if collection is not None:
-                args = slow_create_collection(self.storage_class, args,
-                                              collection)
+                args = slow_create_collection(self.storage_class, args, collection)
             return args
+
         return inner