diff --git a/can/interfaces/usb2can/usb2canInterface.py b/can/interfaces/usb2can/usb2canInterface.py
index 258853425..0d3323f9e 100644
--- a/can/interfaces/usb2can/usb2canInterface.py
+++ b/can/interfaces/usb2can/usb2canInterface.py
@@ -103,7 +103,7 @@ def __init__(
         self.can = Usb2CanAbstractionLayer(dll)
 
         # get the serial number of the device
-        device_id = kwargs.get("serial", d=channel)
+        device_id = kwargs.get("serial", channel)
 
         # search for a serial number if the device_id is None or empty
         if not device_id: