diff --git a/ReportImp/AkggMid/Mitarbeiterarbeitszeitkonto.cs b/ReportImp/AkggMid/Mitarbeiterarbeitszeitkonto.cs
index 0464302f0..cc2f2133c 100644
--- a/ReportImp/AkggMid/Mitarbeiterarbeitszeitkonto.cs
+++ b/ReportImp/AkggMid/Mitarbeiterarbeitszeitkonto.cs
@@ -182,7 +182,7 @@ namespace AkggMid
 
                 System.Drawing.Color backColor = System.Drawing.Color.Transparent;
 
-                if (myRow.Date.DayOfWeek == DayOfWeek.Saturday || myRow.Date.DayOfWeek == DayOfWeek.Sunday)
+                if (myRow.Date.DayOfWeek == DayOfWeek.Saturday || myRow.Date.DayOfWeek == DayOfWeek.Sunday || IstFeiertag(myRow.Date))
                 {
                     backColor = System.Drawing.Color.Gainsboro;
                 }
@@ -194,6 +194,18 @@ namespace AkggMid
             }
         }
 
+        private Service.CustomVacationService _vacationService;
+
+        private bool IstFeiertag(DateTime date)
+        {
+            if (_vacationService == null)
+            {
+                _vacationService = new Service.CustomVacationService();
+            }
+
+            return _vacationService.IstFeiertag(date);
+        }
+
         private string AddText(string text, string description)
         {
 			if (text.Length > 0)