diff --git a/main.py b/main.py
index 7568b43..4dbd878 100644
--- a/main.py
+++ b/main.py
@@ -206,7 +206,7 @@ if __name__ == "__main__":
     with serial.Serial(ser_dev, timeout=1) as s:
         arduino = s
         import threading
-        t = threading.Thread(target=stream, args=[ser_dev])
+        t = threading.Thread(target=stream, args=[s])
 
 
     # classifying as a daemon, so they will die when the main dies