diff --git a/components/tvplanit/source/vpcalendar.pas b/components/tvplanit/source/vpcalendar.pas
index 7bc9806e6..7c4f831e2 100644
--- a/components/tvplanit/source/vpcalendar.pas
+++ b/components/tvplanit/source/vpcalendar.pas
@@ -1426,6 +1426,7 @@ end;
 
 function TVpCustomCalendar.IsHoliday(ADate: TDate; out AHolidayName: String): Boolean;
 begin
+  Result := false;
   AHolidayName := '';
   if Assigned(FOnHoliday) then
   begin