diff --git a/homeassistant/components/plex/server.py b/homeassistant/components/plex/server.py
index 11ccac72f0a..baa41cae87f 100644
--- a/homeassistant/components/plex/server.py
+++ b/homeassistant/components/plex/server.py
@@ -292,9 +292,6 @@ class PlexServer:
             return
 
         def process_device(source, device):
-            if device is None:
-                return
-
             self._known_idle.discard(device.machineIdentifier)
             available_clients.setdefault(device.machineIdentifier, {"device": device})
             available_clients[device.machineIdentifier].setdefault(