diff --git a/ReportImp/ChristianWilke/Invoicing/CustomInvoiceCreation.cs b/ReportImp/ChristianWilke/Invoicing/CustomInvoiceCreation.cs
index 27118af61..3330e1224 100644
--- a/ReportImp/ChristianWilke/Invoicing/CustomInvoiceCreation.cs
+++ b/ReportImp/ChristianWilke/Invoicing/CustomInvoiceCreation.cs
@@ -130,5 +130,14 @@ namespace ChristianWilke.Invoicing
 			}
 			return items;
 		}
-	}
+
+		// Damit in der Abrechnung 50 min als eine Stunde erscheint addRateFactorToUnitCount = true
+		public override IList<InvoiceItem> CreateSummaryInvoiceItems(IList<InvoiceItem> itemList,
+            DateTimeSpan invoicePeriod, SupportConceptApprovalPeriod scap, Calculations calc, bool summaryPerMonth, bool addRateFactorToUnitCount)
+        {
+			addRateFactorToUnitCount = true;
+
+			return base.CreateSummaryInvoiceItems(itemList, invoicePeriod, scap, calc, summaryPerMonth, addRateFactorToUnitCount);
+		}
+    }
 }