diff --git a/app/models/spree/payment_method.rb b/app/models/spree/payment_method.rb
index a521122d67..049936c42a 100644
--- a/app/models/spree/payment_method.rb
+++ b/app/models/spree/payment_method.rb
@@ -98,7 +98,7 @@ module Spree
     end
 
     def init
-      unless reflections.key?(:calculator)
+      unless _reflections.key?(:calculator)
         self.class.include Spree::Core::CalculatedAdjustments
       end