diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 0843aa88..30e01511 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -38,6 +38,7 @@
 - Remove `SensorMetricSample` in favour of using `MetricSample` for sensors.
 - Remove `SensorMetric` enum, since it was unused and redundant.
 - Renamed `MetricSample.source` to `MetricSample.connection` to make it more specific as to what it refers to.
+- Rename `SensorStateCode.SENSOR_STATE_CODE_ON` to `SensorStateCode.SENSOR_STATE_CODE_OK`, to better indicate that we do not control on/off state of sensors.
 
 ## Bug Fixes
 
diff --git a/proto/frequenz/api/common/v1/microgrid/sensors/sensors.proto b/proto/frequenz/api/common/v1/microgrid/sensors/sensors.proto
index 8bf5f64a..8a078dfe 100644
--- a/proto/frequenz/api/common/v1/microgrid/sensors/sensors.proto
+++ b/proto/frequenz/api/common/v1/microgrid/sensors/sensors.proto
@@ -50,7 +50,7 @@ enum SensorStateCode {
   SENSOR_STATE_CODE_UNSPECIFIED = 0;
 
   // The sensor is up and running.
-  SENSOR_STATE_CODE_ON = 1;
+  SENSOR_STATE_CODE_OK = 1;
 
   // The sensor is in an error state.
   SENSOR_STATE_CODE_ERROR = 2;