diff --git a/src/ZEO/ClientStorage.py b/src/ZEO/ClientStorage.py
index 7b02bd15c..5a722c067 100644
--- a/src/ZEO/ClientStorage.py
+++ b/src/ZEO/ClientStorage.py
@@ -490,7 +490,7 @@ def record_iternext(self, next=None):
         return self._call('record_iternext', next)
 
     def getTid(self, oid):
-        # XXX deprecated: used by storage server for full cache verification.
+        # XXX deprecated: but ZODB tests use this. They shouldn't
         return self._call('getTid', oid)
 
     def loadSerial(self, oid, serial):
diff --git a/src/ZEO/StorageServer.py b/src/ZEO/StorageServer.py
index e13e81d1c..7439d34a6 100644
--- a/src/ZEO/StorageServer.py
+++ b/src/ZEO/StorageServer.py
@@ -140,7 +140,9 @@ def setup_delegation(self):
         if not info['supportsUndo']:
             self.undoLog = self.undoInfo = lambda *a,**k: ()
 
+        # XXX deprecated: but ZODB tests use getTid. They shouldn't
         self.getTid = storage.getTid
+
         self.load = storage.load
         self.loadSerial = storage.loadSerial
         record_iternext = getattr(storage, 'record_iternext', None)
diff --git a/src/ZEO/interfaces.py b/src/ZEO/interfaces.py
index 83e48114a..ca9a7c663 100644
--- a/src/ZEO/interfaces.py
+++ b/src/ZEO/interfaces.py
@@ -90,14 +90,6 @@ class IServeable(zope.interface.Interface):
     """Interface provided by storages that can be served by ZEO
     """
 
-    def getTid(oid):
-        """The last transaction to change an object
-
-        Return the transaction id of the last transaction that committed a
-        change to an object with the given object id.
-
-        """
-
     def tpc_transaction():
         """The current transaction being committed.