diff --git a/apps/nspanel-lovelace-ui/luibackend/controller.py b/apps/nspanel-lovelace-ui/luibackend/controller.py
index ca0293be..ccb49a08 100644
--- a/apps/nspanel-lovelace-ui/luibackend/controller.py
+++ b/apps/nspanel-lovelace-ui/luibackend/controller.py
@@ -85,6 +85,7 @@ class LuiController(object):
     def update_screensaver_brightness(self, kwargs):
         bst = self._config.get("sleepTracking")
         sleepOverride = self._config.get("sleepOverride")
+        sOEntity = None
         if sleepOverride is not None and type(sleepOverride) is dict:
             sOEntity = sleepOverride["entity"]
             sOBrightness = sleepOverride["brightness"]