diff --git a/tests/test_utils_asyncio.py b/tests/test_utils_asyncio.py
index 01d0ee043..65e352053 100644
--- a/tests/test_utils_asyncio.py
+++ b/tests/test_utils_asyncio.py
@@ -4,6 +4,7 @@ from unittest import TestCase
 
 from pytest import mark
 
+from scrapy.utils.defer import deferred_f_from_coro_f
 from scrapy.utils.reactor import (
     install_reactor,
     is_asyncio_reactor_installed,
@@ -29,6 +30,8 @@ class AsyncioTest(TestCase):
 
         assert original_reactor == reactor
 
+    @mark.only_asyncio()
+    @deferred_f_from_coro_f
     async def test_set_asyncio_event_loop(self):
         install_reactor("twisted.internet.asyncioreactor.AsyncioSelectorReactor")
-        assert set_asyncio_event_loop() is asyncio.get_running_loop()
+        assert set_asyncio_event_loop(None) is asyncio.get_running_loop()