diff --git a/ReportImp/AidsHilfeDuisburg/Invoicing/SettlementInvoiceCreation.cs b/ReportImp/AidsHilfeDuisburg/Invoicing/SettlementInvoiceCreation.cs
index cd85a262b..7b344e3fe 100644
--- a/ReportImp/AidsHilfeDuisburg/Invoicing/SettlementInvoiceCreation.cs
+++ b/ReportImp/AidsHilfeDuisburg/Invoicing/SettlementInvoiceCreation.cs
@@ -43,6 +43,16 @@ namespace AidsHilfeDuisburg.Invoicing
 			if (factorInSpanList.Count > 1)
 				return false;
 
+			foreach (var sr in GetBillableServiceRecords(c2s))
+			{
+				if (IsServiceRecordBillable(sr) && sr.DurationMinutes > 0)
+				{
+					if (sr.ServiceDescription.Name.ToLower().Contains("fehlkontakt") || (sr.ServiceDescription.ProzentAbrechnung.HasValue && sr.ServiceDescription.ProzentAbrechnung.Value < 100))
+					{
+						return false;
+					}
+				}
+			}
 			return true;
 		}