diff --git a/feedGnuplot.pl b/feedGnuplot.pl
index 9034687..7e1a6b9 100755
--- a/feedGnuplot.pl
+++ b/feedGnuplot.pl
@@ -243,7 +243,8 @@ sub plotThread
 
 }
 
-sub mainThread {
+sub mainThread
+{
     local *PIPE;
     my $dopersist = '';