diff --git a/code/iottb-project/iottb/commands/add_device.py b/code/iottb-project/iottb/commands/add_device.py
index 50ffba9..a045952 100644
--- a/code/iottb-project/iottb/commands/add_device.py
+++ b/code/iottb-project/iottb/commands/add_device.py
@@ -26,7 +26,7 @@ def add_device_guided(ctx, cn, db):
               help='Database in which to add this device. If not specified use default from config.')
 @click.option('--guided', is_flag=True, default=False, show_default=True, envvar='IOTTB_GUIDED_ADD', show_envvar=True,
               help='Add device interactively')
-def add_device(dev, db, guided):
+def add_device(device, db, guided):
     """Add a new device to a database
 
         Device name must be supplied unless in an interactive setup.