diff --git a/lib/flowerbox/delivery/unique_asset_list.rb b/lib/flowerbox/delivery/unique_asset_list.rb
index 5adc032..4d4180d 100644
--- a/lib/flowerbox/delivery/unique_asset_list.rb
+++ b/lib/flowerbox/delivery/unique_asset_list.rb
@@ -5,7 +5,7 @@ module Flowerbox::Delivery
     end
 
     def to_json
-      collect { |asset| asset.pathname.to_s }
+      collect(&:logical_path)
     end
 
     private