diff --git a/source/_components/light.mqtt.markdown b/source/_components/light.mqtt.markdown
index 459c4cb70eb..2ad7cd6e837 100644
--- a/source/_components/light.mqtt.markdown
+++ b/source/_components/light.mqtt.markdown
@@ -182,6 +182,11 @@ white_value_command_topic:
   description: "The MQTT topic to publish commands to change the light's white value."
   required: false
   type: string
+white_value_scale:
+  description: "Defines the maximum white value (i.e. 100%) of the MQTT device."
+  required: false
+  type: integer
+  default: 255
 white_value_state_topic:
   description: The MQTT topic subscribed to receive white value updates.
   required: false