diff --git a/zipline/data/dispatch_bar_reader.py b/zipline/data/dispatch_bar_reader.py
index 4a6ecf77..a80e66b6 100644
--- a/zipline/data/dispatch_bar_reader.py
+++ b/zipline/data/dispatch_bar_reader.py
@@ -96,7 +96,7 @@ class AssetDispatchBarReader(with_metaclass(ABCMeta)):
 
         for i, asset in enumerate(assets):
             t = type(asset)
-            sid_groups[t].append(asset.sid)
+            sid_groups[t].append(asset)
             out_pos[t].append(i)
 
         batched_arrays = {