diff --git a/app/controllers/origami/void_controller.rb b/app/controllers/origami/void_controller.rb
index ffb2bde4..0ac9df9f 100755
--- a/app/controllers/origami/void_controller.rb
+++ b/app/controllers/origami/void_controller.rb
@@ -42,12 +42,14 @@ class Origami::VoidController < BaseOrigamiController
       table_avaliable = true
       table = sale.bookings[0].dining_facility
       table.bookings.each do |booking|
-        if booking.sale.sale_status == 'new'
-          table_avaliable = false
+        if !booking.sale.nil? 
+          if booking.sale.sale_status == 'new'
+            table_avaliable = false
+          end
         end
       end
 
-      if table_avaliable == true
+      if table_avaliable
         table.status = 'available'
         table.save
       end
diff --git a/app/views/origami/payments/show.html.erb b/app/views/origami/payments/show.html.erb
index c076b81b..98fd4385 100755
--- a/app/views/origami/payments/show.html.erb
+++ b/app/views/origami/payments/show.html.erb
@@ -369,7 +369,7 @@
         var master1 = $('#mastercount').text();
         var othertotal = parseFloat(credit1) + parseFloat(card1) + parseFloat(paypar1) + parseFloat(visa1) + parseFloat(jcb1) + parseFloat(master1);
         var total = $('#amount_due').text();
-        var amt = parseFloat(total) - othertotal;
+        var amt = parseFloat(total) - parseFloat(othertotal);
         $('#cash').text(amt);
         update_balance();
         break;
@@ -517,7 +517,7 @@
     var master = $('#mastercount').text();
     var amount_due = $('#amount_due').text();
     var total = parseFloat(cash) + parseFloat(credit) + parseFloat(card) + parseFloat(paypar) + parseFloat(visa) + parseFloat(jcb) + parseFloat(master)
-    var result = amount_due - total;
+    var result = parseFloat(amount_due) - parseFloat(total);
     $('#balance').text(result.toFixed(2));
   }