diff --git a/src/_zkapauthorizer/tests/foolscap.py b/src/_zkapauthorizer/tests/foolscap.py
index 25cfcf7614ac2a134800e30f284618b36b67b393..b10b00ed48a1ccdc75d3c6037ebeaf0dd8fc66c1 100644
--- a/src/_zkapauthorizer/tests/foolscap.py
+++ b/src/_zkapauthorizer/tests/foolscap.py
@@ -32,13 +32,13 @@ class RIEcho(RemoteInterface):
         return Any()
 
 
-class StubStorageBackend(object):
+class StubStorageServer(object):
     def register_bucket_writer_close_handler(self, handler):
         pass
 
 
 def get_anonymous_storage_server():
-    return StubStorageBackend()
+    return StubStorageServer()
 
 
 class BrokenCopyable(Copyable):