diff --git a/custom_components/mega/light.py b/custom_components/mega/light.py
index 643dae6..6ee78e0 100644
--- a/custom_components/mega/light.py
+++ b/custom_components/mega/light.py
@@ -131,7 +131,7 @@ class MegaRGBW(LightEntity, BaseMegaEntity):
     def max_values(self) -> list:
         if self._max_values is None:
             if self.is_ws:
-                self._max_values = [255] * 3
+                self._max_values = [255] * 4
             else:
                 self._max_values = [
                     255 if isinstance(x, int) else 4095 for x in self.port