diff --git a/BealeEngineering/BealeEngineering.Core/Model/Sale/Invoice.cs b/BealeEngineering/BealeEngineering.Core/Model/Sale/Invoice.cs
index 16827c9..5ab8fab 100644
--- a/BealeEngineering/BealeEngineering.Core/Model/Sale/Invoice.cs
+++ b/BealeEngineering/BealeEngineering.Core/Model/Sale/Invoice.cs
@@ -81,11 +81,11 @@ namespace BealeEngineering.Core.Model.Sale
                 foreach (var line in InvoiceLineList)
                 {
                     // checks on each line
-                    if (line.Quantity <= 0)
-                    {
-                        var result = new ValidationResult("Quantity must be greater than zero.");
-                        ValidationResults.Add(result);
-                    }
+                    //if (line.Quantity <= 0)
+                    //{
+                    //    var result = new ValidationResult("Quantity must be greater than zero.");
+                    //    ValidationResults.Add(result);
+                    //}
 
                     lineTotal = lineTotal + line.LineNetAmount;
                     lineTaxTotal = lineTaxTotal + line.TaxAmount;