diff --git a/ibkr/client.py b/ibkr/client.py
index 4024923..4d7d548 100644
--- a/ibkr/client.py
+++ b/ibkr/client.py
@@ -136,7 +136,7 @@ class Client:
         leg_data = self.get_market_data(self.get_option_contract(leg))
         leg_mid = (leg_data.ask + max(leg_data.bid, 0)) / 2.0
 
-        option_order = self.submit_single_option_order(leg_data)
+        option_order = self.submit_single_option_order(leg)
         while not option_order.isDone():
             self.ib.waitOnUpdate()