diff --git a/integration/test_web.py b/integration/test_web.py
index f316c124c..79d90352a 100644
--- a/integration/test_web.py
+++ b/integration/test_web.py
@@ -77,19 +77,18 @@ def test_put(alice):
     use PUT to create a file
     """
 
-    FILE_CONTENTS = u"added via PUT"
+    FILE_CONTENTS = b"added via PUT" * 20
 
     resp = requests.put(
         util.node_url(alice.node_dir, u"uri"),
-        files={
-            u"file": FILE_CONTENTS,
-        },
+        data=FILE_CONTENTS,
     )
     cap = allmydata.uri.from_string(resp.text.strip().encode('ascii'))
+    cfg = alice.get_config()
     assert isinstance(cap, allmydata.uri.CHKFileURI)
-    assert cap.size == 153
-    assert cap.total_shares == 4
-    assert cap.needed_shares == 2
+    assert cap.size == len(FILE_CONTENTS)
+    assert cap.total_shares == int(cfg.get_config("client", "shares.total"))
+    assert cap.needed_shares == int(cfg.get_config("client", "shares.needed"))
 
 
 def test_helper_status(storage_nodes):
diff --git a/integration/util.py b/integration/util.py
index f5d2e1f07..aef9ba544 100644
--- a/integration/util.py
+++ b/integration/util.py
@@ -17,6 +17,7 @@ from allmydata.util.configutil import (
     set_config,
     write_config,
 )
+from allmydata import client
 
 import pytest_twisted
 
@@ -164,6 +165,12 @@ class TahoeProcess(object):
     def node_dir(self):
         return self._node_dir
 
+    def get_config(self):
+        return client.read_config(
+            self._node_dir,
+            u"portnum",
+        )
+
     def __str__(self):
         return "<TahoeProcess in '{}'>".format(self._node_dir)