diff --git a/app/models/spree/stock/quantifier.rb b/app/models/spree/stock/quantifier.rb
index 21f1750ca0..01e9b77cb1 100644
--- a/app/models/spree/stock/quantifier.rb
+++ b/app/models/spree/stock/quantifier.rb
@@ -30,7 +30,7 @@ module Spree
 
       def fetch_stock_items
         # Don't re-fetch associated stock items from the DB if we've already eager-loaded them
-        return @variant.stock_items.to_a if @variant.stock_items.loaded?
+        return @variant.stock_items if @variant.stock_items.loaded?
 
         Spree::StockItem.joins(:stock_location).
           where(:variant_id => @variant, Spree::StockLocation.table_name => { active: true })