diff --git a/app/controllers/readings_controller.rb b/app/controllers/readings_controller.rb
index cc796c8..315998a 100644
--- a/app/controllers/readings_controller.rb
+++ b/app/controllers/readings_controller.rb
@@ -35,7 +35,7 @@ class ReadingsController < ActionController::API
   end
 
   def raspberry
-    @raspberry ||= Raspberry.find_or_create_by! params[:controller_id]
+    @raspberry ||= Raspberry.find_or_create_by! name: params[:controller_id]
   end
 
   # Procesa la transacción