diff --git a/sep_hedge.py b/sep_hedge.py
index 9f2e894..9e34316 100644
--- a/sep_hedge.py
+++ b/sep_hedge.py
@@ -125,6 +125,7 @@ async def handle_message(message):
             or side != "BUY"
             or not outcome
             or (status != "MATCHED")
+            or (size < 1)
             or (price > 0.50)
         ):
             return