diff --git a/piker/brokers/ib/broker.py b/piker/brokers/ib/broker.py
index 6efdf7b1..b604e4db 100644
--- a/piker/brokers/ib/broker.py
+++ b/piker/brokers/ib/broker.py
@@ -595,6 +595,9 @@ async def trades_dialogue(
                         tables,
                     )
 
+                # TODO: make this thread-async!
+                table.write_config()
+
                 # block until cancelled
                 await trio.sleep_forever()