diff --git a/CHANGES/5516.misc b/CHANGES/5516.misc
new file mode 100644
index 00000000000..966c85cc9b4
--- /dev/null
+++ b/CHANGES/5516.misc
@@ -0,0 +1 @@
+Removed @unittest_run_loop. This is now the default behaviour.
diff --git a/aiohttp/test_utils.py b/aiohttp/test_utils.py
index dd6c91c368e..e8ebb6d4ed0 100644
--- a/aiohttp/test_utils.py
+++ b/aiohttp/test_utils.py
@@ -2,7 +2,6 @@
 
 import asyncio
 import contextlib
-import functools
 import gc
 import inspect
 import ipaddress
@@ -456,21 +455,6 @@ async def get_client(self, server: TestServer) -> TestClient:
         return TestClient(server)
 
 
-def unittest_run_loop(func: Any, *args: Any, **kwargs: Any) -> Any:
-    """A decorator dedicated to use with asynchronous methods of an
-    AioHTTPTestCase.
-
-    Handles executing an asynchronous function, using
-    the self.loop of the AioHTTPTestCase.
-    """
-
-    @functools.wraps(func, *args, **kwargs)
-    def new_func(self: Any, *inner_args: Any, **inner_kwargs: Any) -> Any:
-        return self.loop.run_until_complete(func(self, *inner_args, **inner_kwargs))
-
-    return new_func
-
-
 _LOOP_FACTORY = Callable[[], asyncio.AbstractEventLoop]
 
 
diff --git a/docs/testing.rst b/docs/testing.rst
index f5895617523..a93876e9497 100644
--- a/docs/testing.rst
+++ b/docs/testing.rst
@@ -290,7 +290,7 @@ Unittest
 To test applications with the standard library's unittest or unittest-based
 functionality, the AioHTTPTestCase is provided::
 
-    from aiohttp.test_utils import AioHTTPTestCase, unittest_run_loop
+    from aiohttp.test_utils import AioHTTPTestCase
     from aiohttp import web
 
     class MyAppTestCase(AioHTTPTestCase):
@@ -306,26 +306,11 @@ functionality, the AioHTTPTestCase is provided::
             app.router.add_get('/', hello)
             return app
 
-        # the unittest_run_loop decorator can be used in tandem with
-        # the AioHTTPTestCase to simplify running
-        # tests that are asynchronous
-        @unittest_run_loop
         async def test_example(self):
-            resp = await self.client.request("GET", "/")
-            assert resp.status == 200
-            text = await resp.text()
-            assert "Hello, world" in text
-
-        # a vanilla example
-        def test_example_vanilla(self):
-            async def test_get_route():
-                url = "/"
-                resp = await self.client.request("GET", url)
-                assert resp.status == 200
+            async with self.client.request("GET", "/") as resp:
+                self.assertEqual(resp.status, 200)
                 text = await resp.text()
-                assert "Hello, world" in text
-
-            self.loop.run_until_complete(test_get_route())
+            self.assertIn("Hello, world", text)
 
 .. class:: AioHTTPTestCase
 
@@ -408,25 +393,13 @@ functionality, the AioHTTPTestCase is provided::
    .. note::
 
       The ``TestClient``'s methods are asynchronous: you have to
-      execute function on the test client using asynchronous methods.
-
-      A basic test class wraps every test method by
-      :func:`unittest_run_loop` decorator::
+      execute functions on the test client using asynchronous methods.::
 
          class TestA(AioHTTPTestCase):
 
-             @unittest_run_loop
              async def test_f(self):
-                 resp = await self.client.get('/')
-
-
-.. decorator:: unittest_run_loop:
-
-   A decorator dedicated to use with asynchronous methods of an
-   :class:`AioHTTPTestCase`.
-
-   Handles executing an asynchronous function, using
-   the :attr:`AioHTTPTestCase.loop` of the :class:`AioHTTPTestCase`.
+                 async with self.client.get('/') as resp:
+                     body = await resp.text()
 
 Patching unittest test cases
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/test_loop.py b/tests/test_loop.py
index 3211b756702..50fe5a8ad69 100644
--- a/tests/test_loop.py
+++ b/tests/test_loop.py
@@ -6,7 +6,7 @@
 import pytest
 
 from aiohttp import web
-from aiohttp.test_utils import AioHTTPTestCase, unittest_run_loop
+from aiohttp.test_utils import AioHTTPTestCase
 
 
 @pytest.mark.skipif(
@@ -34,7 +34,6 @@ async def get_application(self) -> web.Application:
     async def on_startup_hook(self, app: Any) -> None:
         self.on_startup_called = True
 
-    @unittest_run_loop
     async def test_on_startup_hook(self) -> None:
         self.assertTrue(self.on_startup_called)
 
diff --git a/tests/test_test_utils.py b/tests/test_test_utils.py
index 9ef27154846..2a540f104e3 100644
--- a/tests/test_test_utils.py
+++ b/tests/test_test_utils.py
@@ -16,7 +16,6 @@
     TestServer as _TestServer,
     loop_context,
     make_mocked_request,
-    unittest_run_loop,
 )
 
 _hello_world_str = "Hello, world"
@@ -90,7 +89,6 @@ class TestAioHTTPTestCase(AioHTTPTestCase):
     def get_app(self):
         return _create_example_app()
 
-    @unittest_run_loop
     async def test_example_with_loop(self) -> None:
         request = await self.client.request("GET", "/")
         assert request.status == 200