diff --git a/13.Demokit/1.Deploy_demokit/0_setup.py b/13.Demokit/1.Deploy_demokit/0_setup.py
index 3a367ce17d96a4c046c37eac3abc6e3d1f44da45..46bbb65fbbe210b31fa2e71965c8da5ddc076178 100644
--- a/13.Demokit/1.Deploy_demokit/0_setup.py
+++ b/13.Demokit/1.Deploy_demokit/0_setup.py
@@ -48,11 +48,11 @@ def setup(interactive=True):
         with open('/etc/miris/netcapture.json', 'w') as f:
             json.dump(c, f)
 
-        cmds.extend(
+        cmds.extend([
             'rsync -r mirisconf/ /etc/miris/conf',
             'chgrp -R video /etc/miris/conf',
             'chmod -R 774 /etc/miris/conf',
-        )
+        ])
         if subprocess.getstatusoutput("netcapturectl ls")[0] != 0:
             # start netcapture without hw accel
             cmds.append('netcapturectl add')