diff --git a/feedGnuplot.pl b/feedGnuplot.pl
index 3215514..0e4fc3b 100755
--- a/feedGnuplot.pl
+++ b/feedGnuplot.pl
@@ -1,5 +1,6 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl
 use strict;
+use warnings;
 use Getopt::Long;
 use Time::HiRes qw( usleep );
 use IO::Handle;