diff --git a/src/_zkapauthorizer/tests/test_storage_protocol.py b/src/_zkapauthorizer/tests/test_storage_protocol.py
index 3f324e64700eb7403fec1f7103ac22614491f456..569f852561669862a88ca277254822d3b93df3b3 100644
--- a/src/_zkapauthorizer/tests/test_storage_protocol.py
+++ b/src/_zkapauthorizer/tests/test_storage_protocol.py
@@ -158,20 +158,6 @@ class RequiredPassesTests(TestCase):
         )
 
 
-from allmydata.storage.immutable import ShareFile
-orig_ShareFile__init__ = ShareFile.__init__
-def ShareFile__init__(self, filename, max_size=None, create=False):
-    print("ShareFile(filename={}, max_size={}, create={})".format(
-        filename,
-        max_size,
-        create,
-    ))
-    orig_ShareFile__init__(self, filename, max_size, create)
-    with open(self.home) as f:
-        print("Home: {!r}".format(f.read(12)))
-ShareFile.__init__ = ShareFile__init__
-del ShareFile
-
 class ShareTests(TestCase):
     """
     Tests for interaction with shares.