diff --git a/src/calibre/devices/__init__.py b/src/calibre/devices/__init__.py index 7cf98913f3..466a9ec20a 100644 --- a/src/calibre/devices/__init__.py +++ b/src/calibre/devices/__init__.py @@ -97,6 +97,8 @@ def debug(ioreg_to_tmp=False, buf=None): out('Devices possibly connected:', end=' ') for dev, det in connected_devices: out(dev.name, end=', ') + if not connected_devices: + out('None', end='') out(' ') for dev, det in connected_devices: out('Trying to open', dev.name, '...', end=' ')