diff --git a/app/controllers/readings_controller.rb b/app/controllers/readings_controller.rb
index b0c0f42..1640e5d 100644
--- a/app/controllers/readings_controller.rb
+++ b/app/controllers/readings_controller.rb
@@ -6,6 +6,11 @@ class ReadingsController < ActionController::API
 
   # @see {https://docutopia.tupale.co/sutty:nodemecu:api}
   def create
+    if reading_params.empty?
+      head :ok
+      return
+    end
+
     Reading.transaction do
       reading = raspberry.readings.build reading_params
       reading.id = params[:transaction_uuid]