diff --git a/tests/storage/servers/fastmail/__init__.py b/tests/storage/servers/fastmail/__init__.py
index 3935c40..3233fc8 100644
--- a/tests/storage/servers/fastmail/__init__.py
+++ b/tests/storage/servers/fastmail/__init__.py
@@ -5,11 +5,12 @@ import pytest
 
 class ServerMixin:
     @pytest.fixture
-    def get_storage_args(self, item_type, slow_create_collection, aio_connector):
-        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 get_storage_args(self, slow_create_collection, aio_connector, request):
+        if "item_type" in request.fixturenames:
+            if request.getfixturevalue("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.")
 
         async def inner(collection="test"):
             args = {