diff --git a/fhem/FHEM/95_holiday.pm b/fhem/FHEM/95_holiday.pm
index 4a6a34c14..504f839bc 100644
--- a/fhem/FHEM/95_holiday.pm
+++ b/fhem/FHEM/95_holiday.pm
@@ -175,7 +175,7 @@ holiday_refresh($;$$)
       my $yday=$fd[7];
       # create time object of target date - mktime counts months and their
       # days from 0 instead of 1, so subtract 1 from each
-      my $tgt=mktime(0,0,1,$a[4]-1,$a[3]-1,$fd[5],0,0,-1);
+      my $tgt=mktime(0,0,1,$a[4],$a[3]-1,$fd[5],0,0,-1);
       my $tgtmin=$tgt;
       my $tgtmax=$tgt;
       my $weeksecs=7*24*60*60; # 7 days, 24 hours, 60 minutes, 60seconds each