diff --git a/Service/Plugins/AccountingService.cs b/Service/Plugins/AccountingService.cs
index 3c0db6581..1f2dd6a89 100644
--- a/Service/Plugins/AccountingService.cs
+++ b/Service/Plugins/AccountingService.cs
@@ -45,7 +45,7 @@ namespace BeWo.Service.Plugins
 				if (!supportConceptOid.HasValue)
 				{
 					supportConcepts =
-						supportConcepts.Where(sc => sc.StartDate < newSpan.EndDate && sc.EndDate >= newSpan.StartDate);
+						supportConcepts.Where(sc => sc.StartDate < newSpan.EndDateTime && sc.EndDate >= newSpan.StartDate);
 				}
 			}
 			var supportConcepts2ServiceRecords = supportConcepts.ToDictionary(