diff --git a/storage/compat/common.py b/storage/compat/common.py
index 84d8bd5..75ba1a7 100644
--- a/storage/compat/common.py
+++ b/storage/compat/common.py
@@ -2,9 +2,10 @@
 
 """Compatibility layer on scopes.storage: common functionality."""
 
-from sqlalchemy import Table, Column, Index, BigInteger, Text
+from sqlalchemy import Table, Column, Index, Text
 
 from scopes.storage import common
+from scopes.storage.db import postgres
 
 
 class Storage(common.Storage):
@@ -31,11 +32,16 @@ class Storage(common.Storage):
         return createUidTable(self)
 
 
+class StorageFactory(postgres.StorageFactory):
+
+    storageClass = Storage
+
+
 def createUidTable(storage):
     metadata = storage.metadata
-    cols = [Column('legacy', BigInteger, primary_key=True),
+    cols = [Column('legacy', storage.db.IdType, primary_key=True),
             Column('prefix', Text, nullable=False),
-            Column('id', BigInteger, nullable=False)]
+            Column('id', storage.db.IdType, nullable=False)]
     idxs = [Index('idx_uid_mapping_prefix_id', 'prefix', 'id', unique=True)]
     table = Table('uid_mapping', metadata, *(cols+idxs), extend_existing=True)
     metadata.create_all(storage.engine)
diff --git a/storage/tests/common.py b/storage/tests/common.py
index cac4364..445272d 100644
--- a/storage/tests/common.py
+++ b/storage/tests/common.py
@@ -18,15 +18,15 @@ from loops.organize.tests import setupObjectsForTesting
 from loops.storage.compat.common import Storage
 from loops import util
 
-from scopes.storage.db.postgres import StorageFactory 
+from loops.storage.compat.common import StorageFactory
 
-factory = StorageFactory(config, storageClass=Storage)
-storage = factory(schema='testing')
+util.storageFactory = StorageFactory(config)
 
 
 class Glob(object):
-    pass
 
+    storage = util.storageFactory(schema='testing')
+    
 
 class TestCase(unittest.TestCase):
 
@@ -41,7 +41,6 @@ class TestCase(unittest.TestCase):
         loopsId = util.getUidForObject(loopsRoot)
         setupData = setupObjectsForTesting(site, g.concepts)
         g.johnC = setupData.johnC
-        g.storage = storage
 
     @classmethod
     def cleanup(cls):
diff --git a/util.py b/util.py
index b3d5040..5241391 100644
--- a/util.py
+++ b/util.py
@@ -25,11 +25,10 @@ except ImportError:
 import cybertools
 from cybertools.meta.interfaces import IOptions
 from loops.browser.util import html_quote
-from loops.storage.compat.common import Storage
 
 import config
-from scopes.storage.db.postgres import StorageFactory
-storageFactory = StorageFactory(config, storageClass=Storage)
+from loops.storage.compat.common import StorageFactory
+storageFactory = StorageFactory(config)
 
 _ = MessageFactory('loops')