diff --git a/src/memory/persistent.py b/src/memory/persistent.py
index 6d7dba1e..ea93e23e 100644
--- a/src/memory/persistent.py
+++ b/src/memory/persistent.py
@@ -201,7 +201,9 @@ class LazyPersistentBinaryDict(PersistentBinaryDict):
 
     def __getitem__(self, key):
         """get the value as a Deferred"""
-        return self.storage.getPrivates(self.namespace, keys=[key], binary=self.binary, profile=self.profile)
+        d = self.storage.getPrivates(self.namespace, keys=[key], binary=self.binary, profile=self.profile)
+        d.addCallback(lambda data: data[key])
+        return d
 
     def __setitem__(self, key, value):
         self.storage.setPrivateValue(self.namespace, key, value, self.binary, self.profile)
diff --git a/src/memory/sqlite.py b/src/memory/sqlite.py
index 55ea32b1..80410c17 100644
--- a/src/memory/sqlite.py
+++ b/src/memory/sqlite.py
@@ -571,8 +571,9 @@ class SqliteStorage(object):
         args = [namespace]
 
         if keys is not None:
-            query_parts.append(u'AND key IN ?')
-            args.append(keys)
+            placeholders = u','.join(len(keys) * u'?')
+            query_parts.append(u'AND key IN (' + placeholders + u')')
+            args.extend(keys)
 
         if profile is not None:
             query_parts.append(u'AND profile_id=?')