diff --git a/src/allmydata/test/test_testing.py b/src/allmydata/test/test_testing.py
index e350546ca..a5c712d77 100644
--- a/src/allmydata/test/test_testing.py
+++ b/src/allmydata/test/test_testing.py
@@ -58,7 +58,7 @@ class FakeWebTest(TestCase):
         @inlineCallbacks
         def do_test():
             resp = yield self.http_client.put("http://example.com/uri", content)
-            self.assertEqual(resp.code, 200)
+            self.assertEqual(resp.code, 201)
 
             cap = yield resp.content()
             self.assertTrue(cap.startswith("URI:CHK:"))
diff --git a/src/allmydata/testing/web.py b/src/allmydata/testing/web.py
index fa6a2555a..99dabeddf 100644
--- a/src/allmydata/testing/web.py
+++ b/src/allmydata/testing/web.py
@@ -140,6 +140,7 @@ class _FakeTahoeUriHandler(Resource, object):
 
     def render_PUT(self, request):
         data = request.content.read()
+        request.setResponseCode(201)  # real code does this for brand-new files
         return self.add_data("URI:CHK:", data)
 
     def render_POST(self, request):