diff --git a/app/controllers/readings_controller.rb b/app/controllers/readings_controller.rb
index 135df50..796fe1f 100644
--- a/app/controllers/readings_controller.rb
+++ b/app/controllers/readings_controller.rb
@@ -12,7 +12,7 @@ class ReadingsController < ActionController::API
     reading.signature = headers[:'X-Signature']
 
     params[:arduinos]&.each do |a|
-      arduino = reading.arduinos.build local_id: a[:id]
+      arduino = reading.arduinos.build local_id: a[:id], raspberry: raspberry
 
       a[:sensores]&.each do |s|
         arduino.sensors.build(sensor_params s)