diff --git a/mitmproxy/coretypes/basethread.py b/mitmproxy/coretypes/basethread.py
deleted file mode 100644
index 9a3c64bdc..000000000
--- a/mitmproxy/coretypes/basethread.py
+++ /dev/null
@@ -1,11 +0,0 @@
-import time
-import threading
-
-
-class BaseThread(threading.Thread):
-    def __init__(self, name, *args, **kwargs):
-        super().__init__(name=name, *args, **kwargs)
-        self._thread_started = time.time()
-
-    def _threadinfo(self):
-        return "%s - age: %is" % (self.name, int(time.time() - self._thread_started))
diff --git a/test/mitmproxy/coretypes/test_basethread.py b/test/mitmproxy/coretypes/test_basethread.py
deleted file mode 100644
index 59e28bb0e..000000000
--- a/test/mitmproxy/coretypes/test_basethread.py
+++ /dev/null
@@ -1,7 +0,0 @@
-import re
-from mitmproxy.coretypes import basethread
-
-
-def test_basethread():
-    t = basethread.BaseThread("foobar")
-    assert re.match(r"foobar - age: \d+s", t._threadinfo())