diff --git a/aiohttp/test_utils.py b/aiohttp/test_utils.py
index d7d20fb7f6e..a9cd6ceb3dc 100644
--- a/aiohttp/test_utils.py
+++ b/aiohttp/test_utils.py
@@ -306,8 +306,9 @@ def make_mocked_request(method, path, headers=None, *,
     :param path: str, The URL including *PATH INFO* without the host or scheme
     :type path: str
 
-    :param headers: CIMultiDict with all request headers
-    :type headers: multidict.CIMultiDict
+    :param headers: mapping containing the headers. Can be anything accepted
+        by the multidict.CIMultiDict constructor.
+    :type headers: dict, multidict.CIMultiDict, list of pairs
 
     :param version: namedtuple with encoded HTTP version
     :type version: aiohttp.protocol.HttpVersion
@@ -344,7 +345,7 @@ def make_mocked_request(method, path, headers=None, *,
         closing = True
 
     if headers:
-        hdrs = headers
+        hdrs = CIMultiDict(headers)
         raw_hdrs = [
             (k.encode('utf-8'), v.encode('utf-8')) for k, v in headers.items()]
     else:
diff --git a/docs/testing.rst b/docs/testing.rst
index 9cf452bd970..c54c2697f97 100644
--- a/docs/testing.rst
+++ b/docs/testing.rst
@@ -205,14 +205,13 @@ conditions that hard to reproduce on real server::
 
     from aiohttp import web
     from aiohttp.test_utils import make_mocked_request
-    from multidict import CIMultiDict
 
     def handler(request):
         assert request.headers.get('token') == 'x'
         return web.Response(body=b'data')
 
     def test_handler():
-        req = make_mocked_request('GET', '/', headers=CIMultiDict({'token': 'x'}))
+        req = make_mocked_request('GET', '/', headers={'token': 'x'})
         resp = handler(req)
         assert resp.body == b'data'
 
diff --git a/tests/test_test_utils.py b/tests/test_test_utils.py
index 5c8a897e480..b76e0a9f1d1 100644
--- a/tests/test_test_utils.py
+++ b/tests/test_test_utils.py
@@ -1,12 +1,13 @@
 import asyncio
 
 import pytest
+from multidict import CIMultiDict, CIMultiDictProxy
 
 import aiohttp
-from aiohttp import web
+from aiohttp import web, web_reqrep
 from aiohttp.test_utils import (AioHTTPTestCase, TestClient, loop_context,
-                                setup_test_loop, teardown_test_loop,
-                                unittest_run_loop)
+                                make_mocked_request, setup_test_loop,
+                                teardown_test_loop, unittest_run_loop)
 
 
 def _create_example_app(loop):
@@ -180,3 +181,13 @@ def test_test_client_methods(method, loop, test_client):
 def test_test_client_head(loop, test_client):
     resp = yield from test_client.head("/")
     assert resp.status == 200
+
+
+@pytest.mark.parametrize(
+    "headers", [{'token': 'x'}, CIMultiDict({'token': 'x'}), {}])
+def test_make_mocked_request(headers):
+    req = make_mocked_request('GET', '/', headers=headers)
+    assert req.method == "GET"
+    assert req.path == "/"
+    assert isinstance(req, web_reqrep.Request)
+    assert isinstance(req.headers, CIMultiDictProxy)