diff --git a/TimeSeries.pm b/TimeSeries.pm
index fd8fcdf..fff1ad0 100644
--- a/TimeSeries.pm
+++ b/TimeSeries.pm
@@ -27,7 +27,7 @@ use Data::Dumper;
 use HTTP::Date qw(parse_date);
 use Time::Local qw(timegm_nocheck);
 
-$VERSION = do { my @r=(q$Revision: 1.12 $=~/\d+/g);sprintf "%d."."%02d"x$#r,@r};
+$VERSION = do { my @r=(q$Revision: 1.13 $=~/\d+/g);sprintf "%d."."%02d"x$#r,@r};
 
 =head2 new(%opts)
 
@@ -316,7 +316,7 @@ sub plot {
     my ($self) = @_;
     #print Dumper($self);
 
-    my ($datafh, $datafn) = tempfile("tsplotXXXXXXXX", UNLINK => 0);
+    my ($datafh, $datafn) = tempfile("tsplotXXXXXXXX", UNLINK => 1);
     for my $i (@{$self->{data}}) {
 	my $time = $i->[0];
 	my $data = $i->[1];
@@ -337,8 +337,8 @@ sub plot {
     }
     close($datafh);
 
-    my ($ctlfh, $ctlfn) = tempfile();
-    my ($psfh, $psfn) = tempfile();
+    my ($ctlfh, $ctlfn) = tempfile(UNLINK => 1);
+    my ($psfh, $psfn) = tempfile(UNLINK => 1);
 
     # generic settings