diff --git a/components/tvplanit/source/vpdayview.pas b/components/tvplanit/source/vpdayview.pas
index b169d7c45..6bb50ae77 100644
--- a/components/tvplanit/source/vpdayview.pas
+++ b/components/tvplanit/source/vpdayview.pas
@@ -1077,7 +1077,7 @@ function TVpDayView.IsHoliday(ADate: TDate; out AHolidayName: String): Boolean;
 begin
   AHolidayName := '';
   if Assigned(FOnHoliday) then
-    FOnHoliday(Self, ADate, AHolidayName);
+    FOnHoliday(Self, trunc(ADate), AHolidayName);
   Result := AHolidayName <> '';
 end;