diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
index 8d1363d..5710444 100644
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -493,11 +493,11 @@
             r = MockResponse(200, "OK", {}, "")
             newreq = h.do_request_(req)
             if data is None:  # GET
-                self.assert_("Content-Length" not in req.unredirected_hdrs)
-                self.assert_("Content-Type" not in req.unredirected_hdrs)
+                self.assert_("Content-length" not in req.unredirected_hdrs)
+                self.assert_("Content-type" not in req.unredirected_hdrs)
             else:  # POST
-                self.assertEqual(req.unredirected_hdrs["Content-Length"], "0")
-                self.assertEqual(req.unredirected_hdrs["Content-Type"],
+                self.assertEqual(req.unredirected_hdrs["Content-length"], "0")
+                self.assertEqual(req.unredirected_hdrs["Content-type"],
                              "application/x-www-form-urlencoded")
             # XXX the details of Host could be better tested
             self.assertEqual(req.unredirected_hdrs["Host"], "example.com")
@@ -509,8 +509,8 @@
             req.add_unredirected_header("Host", "baz")
             req.add_unredirected_header("Spam", "foo")
             newreq = h.do_request_(req)
-            self.assertEqual(req.unredirected_hdrs["Content-Length"], "foo")
-            self.assertEqual(req.unredirected_hdrs["Content-Type"], "bar")
+            self.assertEqual(req.unredirected_hdrs["Content-length"], "foo")
+            self.assertEqual(req.unredirected_hdrs["Content-type"], "bar")
             self.assertEqual(req.unredirected_hdrs["Host"], "baz")
             self.assertEqual(req.unredirected_hdrs["Spam"], "foo")