quickly-lens-template: sudo quickly uninstall fails

When trying to uninstall a lens create by quickly-lens-template, the uninstall fails with the following error:

bruno@hamburg:~/Projects/unity-lens-bookmarks$ sudo quickly uninstall
[sudo] password for bruno:
Traceback (most recent call last):
  File "/usr/share/quickly/templates/unity-lens/uninstall.py", line 61, in <module>
    os.rmdir('/usr/share/unity/lenses/lens-%s' % lens_name)
OSError: [Errno 2] No such file or directory: '/usr/share/unity/lenses/lens-bookmarks'

It appears that the install hook create the folder: /usr/share/unity/lenses/<lens-name>
While uninstall attempts to delete: /usr/share/unity/lenses/lens-<lens-name>