diff --git a/backup.sh b/backup.sh
index 796c6fa..0a750e4 100644
--- a/backup.sh
+++ b/backup.sh
@@ -4,6 +4,8 @@ source functions.sh
 
 pidfile=/var/run/backup_script
 
+trap cleanup EXIT
+
 function cleanup {
    echo "bye bye"
    test -f $pidfile && rm -f $pidfile