diff --git a/piker/brokers/ib.py b/piker/brokers/ib.py
index 420087a3..5991f766 100644
--- a/piker/brokers/ib.py
+++ b/piker/brokers/ib.py
@@ -1631,7 +1631,7 @@ async def open_history_client(
 
             # TODO: add logic here to handle tradable hours and only grab
             # valid bars in the range
-            if out == (None, None):
+            if out is None:
                 # could be trying to retreive bars over weekend
                 log.error(f"Can't grab bars starting at {end_dt}!?!?")
                 raise NoData(