diff --git a/Firmware/fibre/python/fibre/discovery.py b/Firmware/fibre/python/fibre/discovery.py
index 1350f33d..4f1eda77 100644
--- a/Firmware/fibre/python/fibre/discovery.py
+++ b/Firmware/fibre/python/fibre/discovery.py
@@ -10,7 +10,6 @@ import traceback
 import fibre.protocol
 import fibre.utils
 import fibre.remote_object
-import fibre.serial_transport
 from fibre.utils import Event, Logger
 from fibre.protocol import ChannelBrokenException
 
diff --git a/tools/setup.py b/tools/setup.py
index badbfe13..7f5bd61a 100644
--- a/tools/setup.py
+++ b/tools/setup.py
@@ -75,7 +75,10 @@ if not creating_package:
   if platform.system() == 'Linux':
     import odrive.utils
     from fibre.utils import Logger
-    odrive.utils.setup_udev_rules(Logger())
+    try:
+      odrive.utils.setup_udev_rules(Logger())
+    except PermissionError:
+      print("Warning: could not set up udev rules. Run `sudo odrivetool udev-setup` to try again.")
 
 setup(
   name = 'odrive',