diff --git a/examples/rainmaker_light/main/app_rainmaker.cpp b/examples/rainmaker_light/main/app_rainmaker.cpp
index 77e8c7acf..eb19e0c9c 100644
--- a/examples/rainmaker_light/main/app_rainmaker.cpp
+++ b/examples/rainmaker_light/main/app_rainmaker.cpp
@@ -358,6 +358,9 @@ static esp_rmaker_param_t *app_rainmaker_param_create(esp_rmaker_device_t *devic
     app_rainmaker_param_add_ui_type(param, cluster, attribute);
     app_rainmaker_param_add_bounds(param, cluster, attribute);
     esp_rmaker_device_add_param(device, param);
+    if (strcmp(param_type, ESP_RMAKER_PARAM_POWER) == 0) {
+        esp_rmaker_device_assign_primary_param(device, param);
+    }
     return param;
 }