diff --git a/Service/Invoicing/SettlementInvoiceCreation.cs b/Service/Invoicing/SettlementInvoiceCreation.cs
index a3460780e..6db68d65f 100644
--- a/Service/Invoicing/SettlementInvoiceCreation.cs
+++ b/Service/Invoicing/SettlementInvoiceCreation.cs
@@ -880,7 +880,7 @@ namespace BeWo.Service.Invoicing
 				ii.UnitCount = Math.Round(uc, 2, MidpointRounding.AwayFromZero);
 				if (ii.AmountPerUnit.HasValue)
 				{
-					if (!String.IsNullOrEmpty(ii.ItemDescription) && ii.ItemDescription == "Fehlkontakte")
+					if (!String.IsNullOrEmpty(ii.ItemDescription) && ii.ItemDescription.ToLower().Contains("fehlkontakt"))
                     {
 						ii.AmountPerUnit = ii.AmountPerUnit * ii.ProzentAbrechenbar / 100;
                     }
@@ -922,7 +922,7 @@ namespace BeWo.Service.Invoicing
 
 					if (ii.AmountPerUnit.HasValue)
 					{
-						if (!String.IsNullOrEmpty(ii.ItemDescription) && ii.ItemDescription == "Fehlkontakte" && ii.ProzentAbrechenbar.HasValue)
+						if (!String.IsNullOrEmpty(ii.ItemDescription) && ii.ItemDescription.ToLower().Contains("fehlkontakt") && ii.ProzentAbrechenbar.HasValue)
 						{
 							ii.AmountPerUnit = ii.AmountPerUnit * ii.ProzentAbrechenbar / 100;
 						}