diff --git a/legacy_promotions/app/decorators/solidus_legacy_promotions/models/spree_promotion_code_batch_decorator.rb b/legacy_promotions/app/decorators/solidus_legacy_promotions/models/spree_promotion_code_batch_decorator.rb
deleted file mode 100644
index fdb8c85454b..00000000000
--- a/legacy_promotions/app/decorators/solidus_legacy_promotions/models/spree_promotion_code_batch_decorator.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-# frozen_string_literal: true
-
-module SolidusLegacyPromotions
-  module SpreePromotionCodeBatchDecorator
-    def process
-      if state == "pending"
-        update!(state: "processing")
-        Spree::PromotionCodeBatchJob.perform_later(self)
-      else
-        raise Spree::PromotionCodeBatch::CantProcessStartedBatch.new("Batch #{id} already started")
-      end
-    end
-
-    Spree::PromotionCodeBatch.prepend(self)
-  end
-end
diff --git a/legacy_promotions/app/models/spree/promotion_code_batch.rb b/legacy_promotions/app/models/spree/promotion_code_batch.rb
index 66cbcc50d6a..85a17be14be 100644
--- a/legacy_promotions/app/models/spree/promotion_code_batch.rb
+++ b/legacy_promotions/app/models/spree/promotion_code_batch.rb
@@ -14,5 +14,14 @@ class CantProcessStartedBatch < StandardError
     def finished?
       state == "completed"
     end
+
+    def process
+      if state == "pending"
+        update!(state: "processing")
+        PromotionCodeBatchJob.perform_later(self)
+      else
+        raise CantProcessStartedBatch.new("Batch #{id} already started")
+      end
+    end
   end
 end