diff --git a/tests/functional/test_bypass.py b/tests/functional/test_bypass.py
index e85dfac2..cf7e75db 100644
--- a/tests/functional/test_bypass.py
+++ b/tests/functional/test_bypass.py
@@ -88,7 +88,7 @@ def stop_tcp_server(context):
 
 @httpretty.activate
 @that_with_context(start_http_server, stop_http_server)
-def test_httpretty_bypasses_when_disabled(context):
+def test_httpretty_bypasses_when_disabled(context=None):
     "httpretty should bypass all requests by disabling it"
 
     httpretty.register_uri(
@@ -122,7 +122,7 @@ def test_httpretty_bypasses_when_disabled(context):
 
 @httpretty.activate(verbose=True)
 @that_with_context(start_http_server, stop_http_server)
-def test_httpretty_bypasses_a_unregistered_request(context):
+def test_httpretty_bypasses_a_unregistered_request(context=None):
     "httpretty should bypass a unregistered request by disabling it"
 
     httpretty.register_uri(
@@ -145,7 +145,7 @@ def test_httpretty_bypasses_a_unregistered_request(context):
 
 @httpretty.activate(verbose=True)
 @that_with_context(start_tcp_server, stop_tcp_server)
-def test_using_httpretty_with_other_tcp_protocols(context):
+def test_using_httpretty_with_other_tcp_protocols(context=None):
     "httpretty should work even when testing code that also use other TCP-based protocols"
 
     httpretty.register_uri(
@@ -163,7 +163,7 @@ def test_using_httpretty_with_other_tcp_protocols(context):
 
 @httpretty.activate(allow_net_connect=False)
 @that_with_context(start_http_server, stop_http_server)
-def test_disallow_net_connect_1(context, verbose=True):
+def test_disallow_net_connect_1(context=None, verbose=True):
     """
     When allow_net_connect = False, a request that otherwise
     would have worked results in UnmockedError.
diff --git a/tests/functional/test_debug.py b/tests/functional/test_debug.py
index 86bf09e7..ee742f39 100644
--- a/tests/functional/test_debug.py
+++ b/tests/functional/test_debug.py
@@ -39,7 +39,7 @@ def create_socket(context):
 @skip('not currently supported')
 @httprettified
 @scenario(create_socket)
-def test_httpretty_debugs_socket_send(context):
+def test_httpretty_debugs_socket_send(context=None):
     "HTTPretty should forward_and_trace socket.send"
 
     expect(context.sock.send).when.called_with(b'data').to.throw(
@@ -50,7 +50,7 @@ def test_httpretty_debugs_socket_send(context):
 @skip('not currently supported')
 @httprettified
 @scenario(create_socket)
-def test_httpretty_debugs_socket_sendto(context):
+def test_httpretty_debugs_socket_sendto(context=None):
     "HTTPretty should forward_and_trace socket.sendto"
 
     expect(context.sock.sendto).when.called.to.throw(
@@ -61,7 +61,7 @@ def test_httpretty_debugs_socket_sendto(context):
 @skip('not currently supported')
 @httprettified
 @scenario(create_socket)
-def test_httpretty_debugs_socket_recvfrom(context):
+def test_httpretty_debugs_socket_recvfrom(context=None):
     "HTTPretty should forward_and_trace socket.recvfrom"
 
     expect(context.sock.recvfrom).when.called.to.throw(
@@ -72,7 +72,7 @@ def test_httpretty_debugs_socket_recvfrom(context):
 @skip('not currently supported')
 @httprettified
 @scenario(create_socket)
-def test_httpretty_debugs_socket_recv_into(context):
+def test_httpretty_debugs_socket_recv_into(context=None):
     "HTTPretty should forward_and_trace socket.recv_into"
     buf = bytearray()
     expect(context.sock.recv_into).when.called_with(buf).to.throw(
@@ -83,7 +83,7 @@ def test_httpretty_debugs_socket_recv_into(context):
 @skip('not currently supported')
 @httprettified
 @scenario(create_socket)
-def test_httpretty_debugs_socket_recvfrom_into(context):
+def test_httpretty_debugs_socket_recvfrom_into(context=None):
     "HTTPretty should forward_and_trace socket.recvfrom_into"
 
     expect(context.sock.recvfrom_into).when.called.to.throw(
diff --git a/tests/functional/test_requests.py b/tests/functional/test_requests.py
index 55aa109d..04a5e809 100644
--- a/tests/functional/test_requests.py
+++ b/tests/functional/test_requests.py
@@ -768,7 +768,7 @@ def test_unicode_querystrings():
 
 
 @use_tornado_server
-def test_recording_calls(port):
+def test_recording_calls(port=None):
     ("HTTPretty should be able to record calls")
     # Given a destination path:
     destination = FIXTURE_FILE("recording-1.json")