diff --git a/src/calibre/devices/smart_device_app/driver.py b/src/calibre/devices/smart_device_app/driver.py
index 1867a1d7ff..9da1ab9635 100644
--- a/src/calibre/devices/smart_device_app/driver.py
+++ b/src/calibre/devices/smart_device_app/driver.py
@@ -300,9 +300,9 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin):
               'particular IP address. The driver will listen only on the '
               'entered address, and this address will be the one advertized '
               'over mDNS (bonjour).') + '</p>',
-        _('Overwrite books with same UUID') + ':::<p>' +
+        _('Replace books with the same calibre identifier') + ':::<p>' +
             _('Use this option to overwrite a book on the device if that book '
-              'has the same UUID as the book being sent. The file name of the '
+              'has the same calibre identifier as the book being sent. The file name of the '
               'book will not change even if the save template produces a '
               'different result. Using this option in most cases prevents '
               'having multiple copies of a book on the device.') + '</p>',