fix #4084

lib/plugins.py

@@ -495,7 +495,7 @@ class DeviceMgr(ThreadJob, PrintError):
             if info.label == keystore.label:
                 return info
         msg = _("Please select which {} device to use:").format(plugin.device)
-        descriptions = [info.label + ' (%s)'%(_("initialized") if info.initialized else _("wiped")) for info in infos]
+        descriptions = [str(info.label) + ' (%s)'%(_("initialized") if info.initialized else _("wiped")) for info in infos]
         c = handler.query_choice(msg, descriptions)
         if c is None:
             raise UserCancelled()