diff --git a/lib/reporting/reports/suppliers/helpers/columns_helper.rb b/lib/reporting/reports/suppliers/helpers/columns_helper.rb
index a5bd1002e9..7db71714e7 100644
--- a/lib/reporting/reports/suppliers/helpers/columns_helper.rb
+++ b/lib/reporting/reports/suppliers/helpers/columns_helper.rb
@@ -19,7 +19,7 @@ module Reporting
             proc do |line_items|
               supplier = supplier(line_items)
 
-              supplier.abn.presence || supplier.acn
+              [supplier.abn, supplier.acn].compact_blank.join("/")
             end
           end