diff --git a/zipline/assets/assets.py b/zipline/assets/assets.py
index f20e6389..d4a66896 100644
--- a/zipline/assets/assets.py
+++ b/zipline/assets/assets.py
@@ -82,36 +82,12 @@ class AssetFinder(object):
 
         self.engine = engine
         metadata = sa.MetaData(bind=engine)
-        self.equities = sa.Table(
-            'equities',
-            metadata,
-            autoload=True,
-            autoload_with=engine,
-        )
-        self.futures_exchanges = sa.Table(
-            'futures_exchanges',
-            metadata,
-            autoload=True,
-            autoload_with=engine,
-        )
-        self.futures_root_symbols = sa.Table(
-            'futures_root_symbols',
-            metadata,
-            autoload=True,
-            autoload_with=engine,
-        )
-        self.futures_contracts = sa.Table(
-            'futures_contracts',
-            metadata,
-            autoload=True,
-            autoload_with=engine,
-        )
-        self.asset_router = sa.Table(
-            'asset_router',
-            metadata,
-            autoload=True,
-            autoload_with=engine,
-        )
+
+        table_names = ['equities', 'futures_exchanges', 'futures_root_symbols',
+                       'futures_contracts', 'asset_router']
+        metadata.reflect(only=table_names)
+        for table_name in table_names:
+            setattr(self, table_name, metadata.tables[table_name])
 
         # Cache for lookup of assets by sid, the objects in the asset lookp may
         # be shared with the results from equity and future lookup caches.