diff --git a/app/models/sale.rb b/app/models/sale.rb
index 5a8f5359..55e53d39 100644
--- a/app/models/sale.rb
+++ b/app/models/sale.rb
@@ -598,9 +598,9 @@ end
 
   def get_commerical_tax
     tax = 0.0
-     self.sale_taxes.each do |tax|
-        if tax.tax_name == "Commerical Tax"
-           tax += tax.tax_payable_amount
+     self.sale_taxes.each do |taxobj|
+        if taxobj.tax_name == "Commerical Tax"
+           tax += taxobj.tax_payable_amount
         end
      end
   end