diff --git a/test/test_proxy.py b/test/test_proxy.py
index c396183b0..641b4f471 100644
--- a/test/test_proxy.py
+++ b/test/test_proxy.py
@@ -70,9 +70,9 @@ class TestProcessProxyOptions:
     def test_simple(self):
         assert self.p()
 
-    def test_confdir(self):
-        with tutils.tmpdir() as confdir:
-            self.assert_noerr("--confdir", confdir)
+    def test_cadir(self):
+        with tutils.tmpdir() as cadir:
+            self.assert_noerr("--cadir", cadir)
 
     @mock.patch("libmproxy.platform.resolver", None)
     def test_no_transparent(self):
@@ -94,12 +94,12 @@ class TestProcessProxyOptions:
         self.assert_err("mutually exclusive", "-R", "http://localhost", "-T")
 
     def test_client_certs(self):
-        with tutils.tmpdir() as confdir:
-            self.assert_noerr("--client-certs", confdir)
+        with tutils.tmpdir() as cadir:
+            self.assert_noerr("--client-certs", cadir)
             self.assert_err("directory does not exist", "--client-certs", "nonexistent")
 
     def test_certs(self):
-        with tutils.tmpdir() as confdir:
+        with tutils.tmpdir() as cadir:
             self.assert_noerr("--cert", tutils.test_data.path("data/testkey.pem"))
             self.assert_err("does not exist", "--cert", "nonexistent")
 
diff --git a/test/tservers.py b/test/tservers.py
index 93c8a80a0..12154ba7d 100644
--- a/test/tservers.py
+++ b/test/tservers.py
@@ -99,7 +99,7 @@ class ProxTestBase(object):
 
     @classmethod
     def teardownAll(cls):
-        shutil.rmtree(cls.confdir)
+        shutil.rmtree(cls.cadir)
         cls.proxy.shutdown()
         cls.server.shutdown()
         cls.server2.shutdown()
@@ -116,10 +116,10 @@ class ProxTestBase(object):
 
     @classmethod
     def get_proxy_config(cls):
-        cls.confdir = os.path.join(tempfile.gettempdir(), "mitmproxy")
+        cls.cadir = os.path.join(tempfile.gettempdir(), "mitmproxy")
         return dict(
             no_upstream_cert = cls.no_upstream_cert,
-            confdir = cls.confdir,
+            cadir = cls.cadir,
             authenticator = cls.authenticator,
             certforward = cls.certforward,
             ssl_ports=([cls.server.port, cls.server2.port] if cls.ssl else []),