diff --git a/src/test.py b/src/test.py
index adb6d4773..a6cde6a3c 100644
--- a/src/test.py
+++ b/src/test.py
@@ -603,6 +603,8 @@ class FakeHTTPConnection(HTTPConnection):
         self.rfile = rfile
         self.wfile = wfile
     def send(self, data):
+        if minisix.PY3 and isinstance(data, bytes):
+            data = data.decode()
         self.wfile.write(data)
     #def putheader(self, name, value):
     #    self._headers[name] = value