diff --git a/test/mitmproxy/test_contrib_tnetstring.py b/test/mitmproxy/test_contrib_tnetstring.py
index 908cec278..05c4a7c93 100644
--- a/test/mitmproxy/test_contrib_tnetstring.py
+++ b/test/mitmproxy/test_contrib_tnetstring.py
@@ -12,7 +12,7 @@ FORMAT_EXAMPLES = {
     b'0:}': {},
     b'0:]': [],
     b'51:5:hello,39:11:12345678901#4:this,4:true!0:~4:\x00\x00\x00\x00,]}':
-    {'hello': [12345678901, b'this', True, None, b'\x00\x00\x00\x00']},
+    {b'hello': [12345678901, b'this', True, None, b'\x00\x00\x00\x00']},
     b'5:12345#': 12345,
     b'12:this is cool,': b'this is cool',
     b'19:this is unicode \xe2\x98\x85;': u'this is unicode \u2605',
diff --git a/test/mitmproxy/tutils.py b/test/mitmproxy/tutils.py
index d0a09035e..5aade60c5 100644
--- a/test/mitmproxy/tutils.py
+++ b/test/mitmproxy/tutils.py
@@ -130,7 +130,7 @@ def tserver_conn():
         timestamp_ssl_setup=3,
         timestamp_end=4,
         ssl_established=False,
-        sni="address",
+        sni=b"address",
         via=None
     ))
     c.reply = controller.DummyReply()