diff --git a/tw88xx_util.py b/tw88xx_util.py
index f745801..61427bd 100644
--- a/tw88xx_util.py
+++ b/tw88xx_util.py
@@ -34,7 +34,7 @@ args = parser.parse_args()
 if args.interface == 'swd':
     from i2c_interfaces import JLinkSwdI2CInterface
     i2c = JLinkSwdI2CInterface(jlink_serial=args.jlink)
-elif args.interface == 'dev':
+elif args.interface == 'devi2c':
     from i2c_interfaces import DevI2CInterface
     i2c = DevI2CInterface(bus=args.bus)