4 files changed, 5 insertions, 5 deletions
diff --git a/test/mitmproxy/test_flow_export.py b/test/mitmproxy/test_flow_export.py
index 0374ba7d..af3713de 100644
--- a/test/mitmproxy/test_flow_export.py
+++ b/test/mitmproxy/test_flow_export.py
@@ -22,7 +22,7 @@ def python_equals(testdata, text):
 
 req_get = lambda: netlib.tutils.treq(method='GET', content='', path=b"/path?a=foo&a=bar&b=baz")
 
-req_post = lambda: netlib.tutils.treq(method='POST', headers=None)
+req_post = lambda: netlib.tutils.treq(method='POST', headers=())
 
 req_patch = lambda: netlib.tutils.treq(method='PATCH', path=b"/path?query=param")
 
diff --git a/test/netlib/http/http2/test_connections.py b/test/netlib/http/http2/test_connections.py
index 9312576f..139d4fc1 100644
--- a/test/netlib/http/http2/test_connections.py
+++ b/test/netlib/http/http2/test_connections.py
@@ -460,7 +460,7 @@ class TestAssembleRequest(object):
             b'',
             b'/',
             b"HTTP/2.0",
-            None,
+            (),
             None,
         ))
         assert len(bytes) == 1
@@ -475,7 +475,7 @@ class TestAssembleRequest(object):
             b'',
             b'/',
             b"HTTP/2.0",
-            None,
+            (),
             None,
         )
         req.stream_id = 0x42
diff --git a/test/netlib/http/test_request.py b/test/netlib/http/test_request.py
index fae7aefe..c03db339 100644
--- a/test/netlib/http/test_request.py
+++ b/test/netlib/http/test_request.py
@@ -13,7 +13,7 @@ class TestRequestData(object):
         with raises(ValueError):
             treq(headers="foobar")
 
-        assert isinstance(treq(headers=None).headers, Headers)
+        assert isinstance(treq(headers=()).headers, Headers)
 
 
 class TestRequestCore(object):
diff --git a/test/netlib/http/test_response.py b/test/netlib/http/test_response.py
index 63c976a2..5eac2a15 100644
--- a/test/netlib/http/test_response.py
+++ b/test/netlib/http/test_response.py
@@ -15,7 +15,7 @@ class TestResponseData(object):
         with raises(ValueError):
             tresp(headers="foobar")
 
-        assert isinstance(tresp(headers=None).headers, Headers)
+        assert isinstance(tresp(headers=()).headers, Headers)
 
 
 class TestResponseCore(object):