diff --git a/src/_zkapauthorizer/_storage_server.py b/src/_zkapauthorizer/_storage_server.py
index 6eb263c8c152438b3de8781707bc79512835bf29..75c3ad4abf49116da9528679b536d0acdc2bce9c 100644
--- a/src/_zkapauthorizer/_storage_server.py
+++ b/src/_zkapauthorizer/_storage_server.py
@@ -378,7 +378,7 @@ class ZKAPAuthorizerStorageServer(Referenceable):
             validation.raise_for(required_new_passes)
 
         # Perform the operation.
-        result = self._original.remote_slot_testv_and_readv_and_writev(
+        result = self._original.slot_testv_and_readv_and_writev(
             storage_index,
             secrets,
             tw_vectors,